Fix whitespaces in error messages

Author: hasufell

src/hlsBinaries.ts

@@ -171,15 +171,15 @@ export async function downloadHaskellLanguageServer(context: ExtensionContext, l
         // install new hls
         if (updateBehaviour === 'never-check') {
             throw new Error(
-                "No version of HLS installed or found and updateBehaviour set to 'never-check'" + 'giving up...'
+                "No version of HLS installed or found and updateBehaviour set to 'never-check' giving up..."
             );
         } else if (updateBehaviour === 'prompt') {
             const promptMessage =
                 'No version of the haskell-language-server is installed, would you like to install it now?';
 
             const decision = await window.showInformationMessage(promptMessage, 'Download', 'Nevermind');
             if (decision !== 'Download') {
-                throw new Error('No version of HLS installed or found and installation was denied' + 'giving up...');
+                throw new Error('No version of HLS installed or found and installation was denied, giving up...');
             }
         }
         await callAsync(