docs(DEV_ENVIRONMENT): remove redundant dot (#1989)

belev · tinayuangao · commit 333474e43d57 · 2016-11-28T14:44:42.000-08:00
diff --git a/DEV_ENVIRONMENT.md b/DEV_ENVIRONMENT.md
@@ -25,5 +25,5 @@ To run lint, run `gulp lint`.
 ### Running benchmarks
 Not yet implemented.
 
-### Running screenshot diff tests.
+### Running screenshot diff tests
 Not yet implemented.
