Update _episodes/05-merging-data.md

Author: wrightaprilm

_episodes/05-merging-data.md

@@ -13,7 +13,7 @@ objectives:
 keypoints:
     - "Pandas' `merge` and `concat` can be used to combine subsets of a DataFrame, or even data from different files."
     - "DataFrames can be combined using join keys with the `join` function."
-    - "Joining two DataFrames can be done in multiple ways (left, right, and inner) according to what data must be in the final DataFrame."
+    - "Joining two DataFrames can be done in multiple ways (left, right, and inner) depending on what data must be in the final DataFrame."
     - "`to_csv` can be used to write out DataFrames in CSV format."
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