fix: broken links to graphql-js (#409)

Co-authored-by: dimitri <[email protected]>

Author: Dimitri POSTOLOV

packages/plugin/src/rules/graphql-js-validation.ts

@@ -32,7 +32,7 @@ const validationToRule = (
           ...meta.docs,
           description:
             meta.docs.description +
-            `\n\n> This rule is a wrapper around a \`graphql-js\` validation function. [You can find it's source code here](https://github.com/graphql/graphql-js/blob/master/src/validation/rules/${ruleName}.js).`,
+            `\n\n> This rule is a wrapper around a \`graphql-js\` validation function. [You can find it's source code here](https://github.com/graphql/graphql-js/blob/main/src/validation/rules/${ruleName}.js).`,
         },
       },
       create: context => {