refactor: remove unnecessary version field from manifest files (#182)

* refactor: remove unnecessary `version` field from manifest files

* fix: fix TypeScript errors

Author: Robot-Inventor

src/manifest/v2.json

@@ -2,7 +2,7 @@
     "manifest_version": 2,
     "name": "Restore Link Card",
     "short_name": "RestoreLinkCard",
-    "version": "1.1.0",
+    "version": "This field is synchronized with package.json",
     "description": "A browser extension to restore OGP link cards on Twitter (X).",
     "icons": {
         "128": "image/icon.png"

src/manifest/v3.json

@@ -2,7 +2,7 @@
     "manifest_version": 3,
     "name": "Restore Link Card",
     "short_name": "RestoreLinkCard",
-    "version": "1.1.0",
+    "version": "This field is synchronized with package.json",
     "description": "A browser extension to restore OGP link cards on Twitter (X).",
     "icons": {
         "128": "image/icon.png"