fix(core): add back missing i18n key (#12088)

fix AF-2576

<!-- This is an auto-generated comment: release notes by coderabbit.ai -->
## Summary by CodeRabbit

- **New Features**
  - Added a new English translation for "Add docs" in the folder organization section of the app sidebar.

- **Chores**
  - Updated translation completeness percentage for the "es-CL" locale.
<!-- end of auto-generated comment: release notes by coderabbit.ai -->

packages/frontend/i18n/src/i18n-completenesses.json

@@ -6,7 +6,7 @@
   "el-GR": 98,
   "en": 100,
   "es-AR": 98,
-  "es-CL": 100,
+  "es-CL": 99,
   "es": 98,
   "fa": 98,
   "fr": 98,

packages/frontend/i18n/src/i18n.gen.ts

@@ -4609,6 +4609,10 @@ export function useAFFiNEI18N(): {
       * `New doc`
       */
     ["com.affine.rootAppSidebar.organize.folder.new-doc"](): string;
+    /**
+      * `Add docs`
+      */
+    ["com.affine.rootAppSidebar.organize.folder.add-docs"](): string;
     /**
       * `Add others`
       */

packages/frontend/i18n/src/resources/en.json

@@ -1145,6 +1145,7 @@
   "com.affine.rootAppSidebar.organize.folder-rm-favorite": "Remove from favorites",
   "com.affine.rootAppSidebar.organize.folder.add-collections": "Add Collections",
   "com.affine.rootAppSidebar.organize.folder.new-doc": "New doc",
+  "com.affine.rootAppSidebar.organize.folder.add-docs": "Add docs",
   "com.affine.rootAppSidebar.organize.folder.add-others": "Add others",
   "com.affine.rootAppSidebar.organize.folder.add-tags": "Add tags",
   "com.affine.rootAppSidebar.organize.folder.create-subfolder": "Create a subfolder",