Fix: Remove extra quote in Slides sample docstring (#333)

* Slides sample: remove extra quote
There's an extra quote in the docstring, causing the code snippet to not be rendered with correct syntax highlighting.

If you go to this page, the snippet look like it's all commented out.
https://developers.google.com/slides/api/guides/create-slide#python

* Remove extra '\n"' from docstrings.

* Fix mismatched region tags

Author: Mariatta

slides/snippets/slides_copy_presentation.py

@@ -27,7 +27,7 @@ def copy_presentation(presentation_id, copy_title):
            Creates the copy Presentation the user has access to.
            Load pre-authorized user credentials from the environment.
            TODO(developer) - See https://developers.google.com/identity
-           for guides on implementing OAuth2 for the application.\n"
+           for guides on implementing OAuth2 for the application.
            """
 
     creds, _ = google.auth.default()

slides/snippets/slides_create_bulleted_text.py

@@ -27,7 +27,7 @@ def create_bulleted_text(presentation_id, shape_id):
         Run create_bulleted_text the user has access to.
         Load pre-authorized user credentials from the environment.
         TODO(developer) - See https://developers.google.com/identity
-        for guides on implementing OAuth2 for the application.\n"
+        for guides on implementing OAuth2 for the application.
         """
     creds, _ = google.auth.default()
     # pylint: disable=maybe-no-member

slides/snippets/slides_create_image.py

@@ -27,7 +27,7 @@ def create_image(presentation_id, page_id):
         Creates images the user has access to.
         Load pre-authorized user credentials from the environment.
         TODO(developer) - See https://developers.google.com/identity
-        for guides on implementing OAuth2 for the application.\n"
+        for guides on implementing OAuth2 for the application.
         """
 
     creds, _ = google.auth.default()

slides/snippets/slides_create_presentation.py

@@ -27,7 +27,7 @@ def create_presentation(title):
         Creates the Presentation the user has access to.
         Load pre-authorized user credentials from the environment.
         TODO(developer) - See https://developers.google.com/identity
-        for guides on implementing OAuth2 for the application.\n"
+        for guides on implementing OAuth2 for the application.
         """
     creds, _ = google.auth.default()
     # pylint: disable=maybe-no-member

slides/snippets/slides_create_sheets_chart.py

@@ -28,7 +28,7 @@ def create_sheets_chart(presentation_id, page_id, spreadsheet_id,
     create_sheets_chart the user has access to.
     Load pre-authorized user credentials from the environment.
     TODO(developer) - See https://developers.google.com/identity
-    for guides on implementing OAuth2 for the application.\n"
+    for guides on implementing OAuth2 for the application.
     """
     creds, _ = google.auth.default()
     # pylint: disable=maybe-no-member
@@ -90,3 +90,5 @@ def create_sheets_chart(presentation_id, page_id, spreadsheet_id,
                         "FIRSTSLIDE",
                         "17eqFZl_WK4WVixX8PjvjfLD77DraoFwMDXeiHB3dvuM",
                         "1107320627")
+
+# [END slides_create_sheets_chart]

slides/snippets/slides_create_slide.py

@@ -27,7 +27,7 @@ def create_slide(presentation_id, page_id):
     Creates the Presentation the user has access to.
     Load pre-authorized user credentials from the environment.
     TODO(developer) - See https://developers.google.com/identity
-    for guides on implementing OAuth2 for the application.\n"
+    for guides on implementing OAuth2 for the application.\n
     """
     creds, _ = google.auth.default()
     # pylint: disable=maybe-no-member

slides/snippets/slides_create_textbox_with_text.py

@@ -27,7 +27,7 @@ def create_textbox_with_text(presentation_id, page_id):
     Creates the textbox with text, the user has access to.
     Load pre-authorized user credentials from the environment.
     TODO(developer) - See https://developers.google.com/identity
-    for guides on implementing OAuth2 for the application.\n"
+    for guides on implementing OAuth2 for the application.
     """
     creds, _ = google.auth.default()
     # pylint: disable=maybe-no-member

slides/snippets/slides_refresh_sheets_chart.py

@@ -27,7 +27,7 @@ def refresh_sheets_chart(presentation_id, presentation_chart_id):
         refresh_sheets_chart the user has access to.
         Load pre-authorized user credentials from the environment.
         TODO(developer) - See https://developers.google.com/identity
-        for guides on implementing OAuth2 for the application.\n"
+        for guides on implementing OAuth2 for the application.
         """
     creds, _ = google.auth.default()
     # pylint: disable=maybe-no-member

slides/snippets/slides_simple_text_replace.py

@@ -27,7 +27,7 @@ def simple_text_replace(presentation_id, shape_id, replacement_text):
     Run simple_text_replace the user has access to.
     Load pre-authorized user credentials from the environment.
     TODO(developer) - See https://developers.google.com/identity
-    for guides on implementing OAuth2 for the application.\n"
+    for guides on implementing OAuth2 for the application.
     """
     creds, _ = google.auth.default()
     # pylint: disable=maybe-no-member
@@ -70,3 +70,5 @@ def simple_text_replace(presentation_id, shape_id, replacement_text):
     simple_text_replace('10QnVUx1X2qHsL17WUidGpPh_SQhXYx40CgIxaKk8jU4',
                         'MyTextBox_6',
                         'GWSpace_now')
+
+# [END slides_simple_text_replace]

slides/snippets/slides_text_merging.py

@@ -27,7 +27,7 @@ def text_merging(template_presentation_id, data_spreadsheet_id):
     Run Text merging the user has access to.
     Load pre-authorized user credentials from the environment.
     TODO(developer) - See https://developers.google.com/identity
-    for guides on implementing OAuth2 for the application.\n"
+    for guides on implementing OAuth2 for the application.
     """
     creds, _ = google.auth.default()
     # pylint: disable=maybe-no-member