Update manifesto.md

Author: born-2learn

manifesto.md

@@ -1,8 +1,8 @@
-![imglogo](https://user-images.githubusercontent.com/42010556/52521641-fdbdb000-2c9f-11e9-82b8-adad757c50e0.png)  
+![WOS_LOGO](https://user-images.githubusercontent.com/42010556/71524553-148ae680-28f4-11ea-8fe5-3d498f80edcb.png){:height="200px" width="200px"}
 
 [Home](https://world-of-open-source.github.io/)  
 [Google Summer of Code 2019-Ideas List](ideas.md)  
 [Mentors](mentors.md)  
 [Proposal Instructions](application-instructions.md)
 
-The manifesto will be updated very soon.
+The manifesto will be updated very soon.