Update source/release-notes.txt

Co-authored-by: Alison Huh <[email protected]>

Author: ianf-mongodb

source/release-notes.txt

@@ -19,7 +19,7 @@ Improvements:
 
 - Performance improvements for {+job_plural+} that create large arrays.
 - Fixed an issue where schema discovery failed on schema names 
-  containing the dash character.
+  that contain the dash character.
 
 1.3.2 Changelog
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