[Fix] update anchor

Author: gokaygurcan

README.md

@@ -17,7 +17,7 @@ npm install eslint eslint-plugin-react --save-dev
 
 It is also possible to install ESLint globally rather than locally (using `npm install -g eslint`). However, this is not recommended, and any plugins or shareable configs that you use must be installed locally in either case.
 
-## Configuration (legacy: `.eslintrc*`)
+## <a id="configuration">Configuration</a> (legacy: `.eslintrc*`)
 
 Use [our preset](#recommended) to get reasonable defaults:
 

lib/util/version.js

@@ -87,7 +87,7 @@ function getReactVersionFromContext(context) {
     confVer = String(settingsVersion);
   } else if (!warnedForMissingVersion) {
     error('Warning: React version not specified in eslint-plugin-react settings. '
-      + 'See https://github.com/jsx-eslint/eslint-plugin-react#configuration-legacy-eslintrc .');
+      + 'See https://github.com/jsx-eslint/eslint-plugin-react#configuration .');
     warnedForMissingVersion = true;
   }
   confVer = /^[0-9]+\.[0-9]+$/.test(confVer) ? `${confVer}.0` : confVer;