update version 1.27.0 (#464)

Reviewed-on: https://gitea.com/gitea/docs/pulls/464
Reviewed-by: Nicolas <[email protected]>
Co-authored-by: Lunny Xiao <[email protected]>

static/swagger-27.json

@@ -17,7 +17,7 @@
       "name": "MIT",
       "url": "http://opensource.org/licenses/MIT"
     },
-    "version": "1.27.0-rc0"
+    "version": "1.27.0"
   },
   "basePath": "https://gitea.com/api/v1",
   "paths": {
@@ -32187,4 +32187,4 @@
       "TOTPHeader": []
     }
   ]
-}
+}