chore(cli): fix sentence structure (#23296)

## Description

Just a small sentence structure fix.

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- [ ] Technical review
- [ ] Editorial review
- [ ] Product review

Author: hsnabszhdn

content/manuals/engine/cli/formatting.md

@@ -18,7 +18,7 @@ include examples of customizing the output format.
 
 > [!NOTE]
 >
-> When using the `--format` flag, you need observe your shell environment.
+> When using the `--format` flag, you need to observe your shell environment.
 > In a POSIX shell, you can run the following with a single quote:
 >
 > ```console