Fix formating

Signed-off-by: Nicolas Arnold <nic@roadie.io>

.changeset/pretty-feet-explode.md

@@ -2,4 +2,4 @@
 '@backstage/plugin-auth-backend': patch
 ---
 
-Allow users to override callback url of Github provider
+Allow users to override callback url of GitHub provider

plugins/auth-backend/src/providers/github/provider.ts

@@ -223,9 +223,8 @@ export const createGithubProvider = (
       const enterpriseInstanceUrl = envConfig.getOptionalString(
         'enterpriseInstanceUrl',
       );
-      const customCallbackUrl = envConfig.getOptionalString(
-        'customCallbackUrl',
-      );
+      const customCallbackUrl =
+        envConfig.getOptionalString('customCallbackUrl');
       const authorizationUrl = enterpriseInstanceUrl
         ? `${enterpriseInstanceUrl}/login/oauth/authorize`
         : undefined;
@@ -235,8 +234,9 @@ export const createGithubProvider = (
       const userProfileUrl = enterpriseInstanceUrl
         ? `${enterpriseInstanceUrl}/api/v3/user`
         : undefined;
-      const callbackUrl = customCallbackUrl ||
-       `${globalConfig.baseUrl}/${providerId}/handler/frame`;
+      const callbackUrl =
+        customCallbackUrl ||
+        `${globalConfig.baseUrl}/${providerId}/handler/frame`;
 
       const catalogIdentityClient = new CatalogIdentityClient({
         catalogApi,