Update README.md

Used my knowledge to fix this complex typo.

Author: hoederath

README.md

@@ -12,7 +12,7 @@ Open-Sourced community contributed and owned repository for Instance Scan Defini
 
 ## Category: Manageability
 
-### Avoid using javascrip "document" object in Portal
+### Avoid using javascript "document" object in Portal
 Always avoid using native js "document" object for DOM manipulation in service portal. Instead we should use AngularJS equivalent capabilities to achieve the same.
 
 ### Don't use new Array()