Add the "learn more" link to C2PA info (to proofmode.org/verify)

src/assets/translations/en.json

@@ -491,6 +491,8 @@
     "metadata_info_original": "Sharing the original automatically includes its metadata.",
     "exif_data": "Exif Data",
     "content_credentials": "Content Credentials",
+    "content_credentials_info": "Source or history information is available for this media to be verified.",
+    "learn_more": "Learn more",
     "ai_used": "AI was used in this media"
   }
 }