techdocs: Add changeset for @backstage/integration changes

.changeset/little-plums-beg.md

@@ -0,0 +1,20 @@
+---
+'@backstage/techdocs-common': patch
+'@backstage/plugin-techdocs-backend': patch
+---
+
+Using @backstage/integration package for GitHub/GitLab/Azure tokens and request options.
+
+Most probably you do not have to make any changes in the app because of this change.
+However, if you are using the `DirectoryPreparer` or `CommonGitPreparer` exported by
+`@backstage/techdocs-common` package, you now need to add pass in a `config` (from `@backstage/config`)
+instance as argument.
+
+```
+<!-- Before -->
+    const directoryPreparer = new DirectoryPreparer(logger);
+    const commonGitPreparer = new CommonGitPreparer(logger);
+<!-- Now -->
+    const directoryPreparer = new DirectoryPreparer(config, logger);
+    const commonGitPreparer = new CommonGitPreparer(config, logger);
+```

packages/techdocs-common/src/git-auth.ts

@@ -101,7 +101,7 @@ export const getTokenForGitRepo = async (
       case 'azure/api':
         return getAzureIntegrationConfig(config, host).token;
       default:
-        throw new Error('Failed to get reository type');
+        throw new Error('Failed to get repository type');
     }
   } catch (error) {
     throw error;