fix Bigtable naming for yaml related files

sdks/java/io/google-cloud-platform/src/main/java/org/apache/beam/sdk/io/gcp/bigtable/BigtableReadSchemaTransformProvider.java

@@ -96,7 +96,7 @@ public String description() {
         + "The transform requires the project ID, instance ID, and table ID parameters.\n"
         + "Optionally, the output can be flattened or nested rows.\n"
         + "Example usage:\n"
-        + "  - type: ReadFromBigTable\n"
+        + "  - type: ReadFromBigtable\n"
         + "    config:\n"
         + "      project: \"my-gcp-project\"\n"
         + "      instance: \"my-bigtable-instance\"\n"

sdks/java/io/google-cloud-platform/src/main/java/org/apache/beam/sdk/io/gcp/bigtable/BigtableWriteSchemaTransformProvider.java

@@ -90,7 +90,7 @@ public String description() {
         + "This transform requires the Google Cloud project ID, Bigtable instance ID, and table ID.\n"
         + "The input PCollection should be schema-compliant mutations or keyed rows.\n"
         + "Example usage:\n"
-        + "  - type: WriteToBigTable\n"
+        + "  - type: WriteToBigtable\n"
         + "    input: input\n"
         + "    config:\n"
         + "      project: \"my-gcp-project\"\n"

sdks/python/apache_beam/runners/interactive/extensions/apache-beam-jupyterlab-sidepanel/src/yaml/EmojiMap.ts

@@ -41,7 +41,8 @@ export const transformEmojiMap: Record<string, string> = {
   WriteToAvro: '⬆️📁',
   ReadFromBigQuery: '⬇️📊',
   WriteToBigQuery: '⬆️📊',
-  WriteToBigTable: '⬆️📋',
+  ReadFromBigtable: '⬇️📋',
+  WriteToBigtable: '⬆️📋',
   ReadFromCsv: '⬇️📝',
   WriteToCsv: '⬆️📝',
   ReadFromIceberg: '⬇️🧊',

sdks/python/apache_beam/yaml/standard_io.yaml

@@ -588,28 +588,27 @@
       config:
         gradle_target: 'sdks:java:io:expansion-service:shadowJar'
 
-#BigTable
+# Bigtable
 - type: renaming
   transforms:
-    'ReadFromBigTable': 'ReadFromBigTable'
-    'WriteToBigTable': 'WriteToBigTable'
+    'ReadFromBigtable': 'ReadFromBigtable'
+    'WriteToBigtable': 'WriteToBigtable'
   config:
     mappings:
-      #Temp removing read from bigTable IO
-      'ReadFromBigTable':
+      'ReadFromBigtable':
         project: 'project_id'
         instance: 'instance_id'
         table: 'table_id'
         flatten: "flatten"
-      'WriteToBigTable':
+      'WriteToBigtable':
         project: 'project_id'
         instance: 'instance_id'
         table: 'table_id'
     underlying_provider:
       type: beamJar
       transforms:
-        'ReadFromBigTable': 'beam:schematransform:org.apache.beam:bigtable_read:v1'
-        'WriteToBigTable': 'beam:schematransform:org.apache.beam:bigtable_write:v1'
+        'ReadFromBigtable': 'beam:schematransform:org.apache.beam:bigtable_read:v1'
+        'WriteToBigtable': 'beam:schematransform:org.apache.beam:bigtable_write:v1'
       config:
         gradle_target: 'sdks:java:io:google-cloud-platform:expansion-service:shadowJar'
 

sdks/python/apache_beam/yaml/tests/bigtable.yaml

@@ -27,7 +27,7 @@ fixtures:
     config:
       bucket: "gs://temp-storage-for-end-to-end-tests/temp-it"
 
-  # Tests for BigTable YAML IO
+  # Tests for Bigtable YAML IO
 
 pipelines:
   - pipeline:
@@ -78,15 +78,15 @@ pipelines:
               # fields are already of the correct type (String, Long) or are optional.
               # We only need to convert fields that are Strings in YAML but need to be Bytes in Java.
 
-        - type: WriteToBigTable
+        - type: WriteToBigtable
           config:
             project: 'apache-beam-testing'
             instance: "{BT_INSTANCE}"
             table: 'test-table'
   - pipeline:
       type: chain
       transforms:
-        - type: ReadFromBigTable
+        - type: ReadFromBigtable
           config:
             project: 'apache-beam-testing'
             instance: "{BT_INSTANCE}"
@@ -133,7 +133,7 @@ pipelines:
   - pipeline:
       type: chain
       transforms:
-        - type: ReadFromBigTable
+        - type: ReadFromBigtable
           config:
             project: 'apache-beam-testing'
             instance: "{BT_INSTANCE}"