Apparently, you did not change anything in the HelloWorld.md file (or it does not exist at all), so there is nothing to accomplish. If you just want to add an “empty” file, first make sure touch HelloWorld.md , so the file is actually created. If it exists, edit it (for example, using vim HelloWorld.md ) and be sure to save the changes in your editor when you are done.
After you have done this and the actual changes to the file have occurred, you can commit it.
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