Add the template option documentation.

hooked-book/source/cli/install.md

@@ -20,3 +20,7 @@ Below is the default script template that Hooked uses, where `hook_type` is the
 ```sh
 {{#include ../../../hooked-cli/source/templates/default.sh}}
 ```
+
+You can provide your own template by using the `general.template` configuration setting. If you do, make sure you include a line somewhere that says `# Installed by Hooked.` for the [uninstall CLI command][cli-uninstall].
+
+[cli-uninstall]: ./uninstall.md

hooked-book/source/configuration/README.md

@@ -10,11 +10,13 @@ The `general` [table][toml-table] is for main Hooked configuration.
 |-----|------|---------|-------------|
 | config | String | Hooked.toml | The configuration file to use. If your configuration file isn't `Hooked.toml` you should set this accordingly. |
 | directory | String | hooks | The directory Hooked looks in for anything related to files. For example: scripts, templates, etc. |
+| template | Optional string | | Path to a custom template to be used when installing scripts. See the [install CLI command][cli-install] for more details. |
 
 ```toml
 [general]
 config = "Hooked.toml"
 directory = "hooks"
+template = "template.sh"
 ```
 
 ## Pre-commit
@@ -43,5 +45,6 @@ on_failure = "continue"
 
 [^command-and-script]: When both a command and script are defined in a hook, *only* the command will be run.
 
+[cli-install]: ../cli/install.md
 [toml-table]: https://toml.io/en/v1.0.0#table
 [toml-arrays-of-tables]: https://toml.io/en/v1.0.0#array-of-tables