Fix writing VRCX metadata on Linux

Dotnet/AppApi/Electron/Screenshot.cs

@@ -37,7 +37,7 @@ namespace VRCX
                 path = newPath;
             }
 
-            ScreenshotHelper.WriteVRCXMetadata(path, metadataString);
+            ScreenshotHelper.WriteVRCXMetadata(metadataString, path);
             return path;
         }
     }

src/views/Settings/dialogs/ScreenshotMetadataDialog.vue

@@ -473,7 +473,7 @@
      * Error checking and and verification of data is done in .NET already; In the case that the data/file is invalid, a JSON object with the token "error" will be returned containing a description of the problem.
      * Example: {"error":"Invalid file selected. Please select a valid VRChat screenshot."}
      * See docs/screenshotMetadata.json for schema
-     * @param {string} metadata - JSON string grabbed from PNG file
+     * @param {string} json - JSON string grabbed from PNG file
      * @param {boolean} needsCarouselFiles - Whether or not to get the last/next files for the carousel
      * @returns {Promise<void>}
      */