Fix 1.0 docs link

Author: Jeremiah VALERIE

README.md

@@ -18,7 +18,7 @@ It also supports:
 
 Browse your version documentation:
 
-* [1.0 (DEV)](https://github.com/overblog/GraphQLBundle/blob/0.14/README.md)
+* [1.0 (DEV)](https://github.com/overblog/GraphQLBundle/blob/master/README.md)
 * [0.14 (DEV)](https://github.com/overblog/GraphQLBundle/blob/0.14/README.md)
 * [0.13 (STABLE)](https://github.com/overblog/GraphQLBundle/blob/0.13/README.md)
 * [0.12 (STABLE)](https://github.com/overblog/GraphQLBundle/blob/0.12/README.md)