Update arduino-ide-extension/src/common/protocol/sketches-service.ts

Co-authored-by: per1234 <[email protected]>

Author: kittaakos

Diff for: arduino-ide-extension/src/common/protocol/sketches-service.ts

@@ -166,7 +166,7 @@ export namespace Sketch {
   );
   const invalidCloudSketchFolderNameMessage = nls.localize(
     'arduino/sketch/invalidCloudSketchName',
-    'The name must consist of basic letters, numbers or underscores. Maximum length is 36 characters.'
+    'The name must start with a letter or number, followed by letters, numbers, dashes, dots and underscores. Maximum length is 36 characters.'
   );
   /**
    * `undefined` if the candidate sketch folder name is valid. Otherwise, the validation error message.