I just saw this revision on a post, and all the revision was take a link to a search engine query. He even missed a typo I made. What's up?
- Any guideline about this?
For some reason, known only to yourself, you decided to add a random link to a search query for "Happy Llamas". Since that has absolutely nothing to do with your question, isn't adding anything remotely relevant to it and doesn't help people understand it, it is just noise and was correctly removed.
We try to keep questions streamlined and to the point. One of the guidelines for posting on Stack Exchange sites is "no chit-chat". It's even one of the first things mentioned in the tour:
This site is all about getting answers. It's not a discussion forum. There's no chit-chat.
So yes, please don't add such noise to your posts. Everything mentioned in a question or answer should be directly relevant to the issue at hand. Anything else should be removed. The edit was fine.