Update .CONTRIBUTING.md

Co-authored-by: Erin Shaben <[email protected]>

Author: brunopgalvao

.CONTRIBUTING.md

@@ -29,7 +29,7 @@ There are two main ways to contribute:
 
 ## Edit Online with GitHub (Simple Changes)
 
-For simple contributions like fixing typos or making small text changes, you can use GitHub's online editor:
+For simple contributions like fixing typos or making small text changes, you can use GitHub's online editor.
 
 ### Making Your Changes