doc: format and ran prettier on precommit.md
CI-Result: Cloud Build
### Install pre-commit hook
The `all.bash` script runs quickly enough so that you can use it as a git
-pre-commit hook. If you don't already have a pre-commit hook, you can install it with
+pre-commit hook. If you don't already have a pre-commit hook, you can install
+it with
```
ln -s -f ../../all.bash .git/hooks/pre-commit
```
-Google workstations start with a small shell script as a pre-commit hook. To add
-`all.bash` to it, edit `.git/hooks/pre-commit` and add the line
+Google workstations start with a small shell script as a pre-commit hook. To
+add `all.bash` to it, edit `.git/hooks/pre-commit` and add the line
```
./all.bash
```
You may prefer to run `all.bash` only when you push (which happens when you run
-`git codereview mail`). You'll need a small script to discard the arguments that
-the pre-push hook is called with. Make this the contents of `.git/hooks/pre-push`:
+`git codereview mail`). You'll need a small script to discard the arguments
+that the pre-push hook is called with. Make this the contents of
+`.git/hooks/pre-push`:
```
#!/bin/sh
@@ -31,14 +33,14 @@ chmod +x .git/hooks/pre-push
### Running Linters/Formatters/Tests
-The `all.bash` script can be used to selectively run actions on the source (e.g.
-linters, code formatters, or tests). Run `./all.bash help` to see a list of
-supported actions.
+The `all.bash` script can be used to selectively run actions on the source
+(e.g. linters, code formatters, or tests). Run `./all.bash help` to see a list
+of supported actions.
Some actions are not run by the default invocation of `./all.bash` that is
-executed in the commit hook. Notably, the `prettier` command is not run, because
-it has a dependency on nodejs, which is otherwise not needed and which not all
-developers have installed on their system.
+executed in the commit hook. Notably, the `prettier` command is not run,
+because it has a dependency on nodejs, which is otherwise not needed and which
+not all developers have installed on their system.
If you are modifying CSS or Javascript, install prettier as described at
https://prettier.io/docs/en/install.html, and run `./all.bash prettier` to
