Update contributing/documentation/docs_writing_guidelines.rst

Co-authored-by: A Thousand Ships <[email protected]>

Author: russellsanborn

contributing/documentation/docs_writing_guidelines.rst

@@ -137,7 +137,7 @@ Write as few adjectives and adverbs as possible. Only use them if they
 add key information to the description.
 
 **Don't** use redundant or meaningless adverbs. Words that lengthen the
-documentation, but don't add any information:
+documentation but don't add any information:
 
 ::