Homebrew installation of clang-format (satisfying >14.0 requirement)
outputs the following version string:
```
Homebrew clang-format version 14.0.6
```
This change fixes the following error while running make-pretty:
```
*** ERROR: Homebrew clang-format version 14.0.6; clang-format 14.0 required
```
`script/clang-format` is supposed to add an EOF newline for every file
passed in as an argument. However, the script only processed the first
file. This can cause `script/make-pretty check` to fail even after
`script/make-pretty clang`.
