docs: Document config vars for command-specific flags

assets/chezmoi.io/docs/reference/commands/add.md

@@ -19,6 +19,8 @@ This implies the `--template` option.
 
 ## `--encrypt`
 
+> Configuration: `add.encrypt`
+
 Encrypt files using the defined encryption method.
 
 ## `-f`, `--force`
@@ -53,6 +55,8 @@ Recursively add all files, directories, and symlinks.
 
 ## `-s`, `--secrets` `ignore`|`warning`|`error`
 
+> Configuration: `add.secrets`
+
 Action to take when a secret is found when adding a file. The default is
 `warning`.
 
@@ -62,6 +66,8 @@ Set the `template` attribute on added files and symlinks.
 
 ## `--template-symlinks`
 
+> Configuration: `add.templateSymlinks`
+
 When adding symlink to an absolute path in the source directory or destination
 directory, create a symlink template with `.chezmoi.sourceDir` or
 `.chezmoi.homeDir`. This is useful for creating portable absolute symlinks.

assets/chezmoi.io/docs/reference/commands/diff.md

@@ -17,11 +17,15 @@ appended automatically.
 
 ## `--reverse`
 
+> Configuration: `diff.reverse`
+
 Reverse the direction of the diff, i.e. show the changes to the target required
 to match the destination.
 
 ## `--pager` *pager*
 
+> Configuration: `diff.pager`
+
 Pager to use for output.
 
 !!! example

assets/chezmoi.io/docs/reference/commands/edit.md

@@ -14,16 +14,22 @@ command line flag is set.
 
 ## `-a`, `--apply`
 
+> Configuration: `edit.apply`
+
 Apply target immediately after editing. Ignored if there are no targets.
 
 ## `--hardlink` *bool*
 
+> Configuration: `edit.hardlink`
+
 Invoke the editor with a hard link to the source file with a name matching the
 target filename. This can help the editor determine the type of the file
 correctly. This is the default.
 
 ## `--watch`
 
+> Configuration: `edit.watch`
+
 Automatically apply changes when files are saved, with the following limitations:
 
 * Only available when `chezmoi edit` is invoked with arguments (i.e.