Merge pull request #2 from vojtech-dobes/fix-typo

Fix typo in readme example

Author: vojtech-dobes

readme.md

@@ -33,7 +33,7 @@ includes:
 graphqlDIContainer:
   dic: [Bootstrap, createContainerForPHPStan]
   extensionMap:
-    %rootDir%/../../../src/schema.graphqls
+    %rootDir%/../../../src/schema.graphqls: graphql
 ```
 
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