Fix English grammer in changelog_unreleased (#17635)

changelog_unreleased/cli/17151.md

@@ -1,6 +1,6 @@
 #### [HIGHLIGHT] Support experimental CLI (#17151, #17396 by @fisker)
 
-You may already heard or used our new [performance improved CLI](https://prettier.io/blog/2023/11/30/cli-deep-dive). From prettier main, you can now use it without installing unstable v4 version.
+You may have already heard of or used our new [performance improved CLI](https://prettier.io/blog/2023/11/30/cli-deep-dive). From prettier main, you can now use it without installing unstable v4 version.
 
 ```sh
 # Run CLI with `--experimental-cli`

changelog_unreleased/cli/17438.md

@@ -1,3 +1,3 @@
 #### Ignore file modified time when `--cache-strategy=content` (#17438 by @fisker)
 
-In previous version, when using `--cache-strategy=content`, if the file modified time changed, it still get re-formatted even the file content didn't change, Prettier main fixed it.
+In previous version, when using `--cache-strategy=content`, if the file modified time changed, it still gets re-formatted even the file content didn't change, Prettier main fixed it.

changelog_unreleased/cli/17505.md

@@ -1,4 +1,4 @@
-#### Fix exitCode when parser can not infer (#17505 by @fisker)
+#### Fix exitCode when parser cannot infer (#17505 by @fisker)
 
 ```console
 touch unknown