Fixed incorrect usage of effect to affect.

Author: vicjohnson

README.md

@@ -3054,7 +3054,7 @@ Use [Gulp](http://gulpjs.com) or [Grunt](http://gruntjs.com) for creating automa
 
   - Avoid using filters for scanning all properties of a complex object graph. Use filters for select properties.
 
-    *Why?*: Filters can easily be abused and negatively effect performance if not used wisely, for example when a filter hits a large and deep object graph.
+    *Why?*: Filters can easily be abused and negatively affect performance if not used wisely, for example when a filter hits a large and deep object graph.
 
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