docs: update manual pages

doc/dwarfs.md

@@ -149,6 +149,12 @@ options:
   monitoring enabled. Available components include `fuse`, `filesystem_v2`
   and `inode_reader_v2`.
 
+- `--man`:
+  If the project was built with support for built-in manual pages, this
+  option will show the manual page. If supported by the terminal and a
+  suitable pager (e.g. `less`) is found, the manual page is displayed
+  in the pager.
+
 There's two particular FUSE options that you'll likely need at some
 point, e.g. when trying to set up an `overlayfs` mount on top of
 a DwarFS image:

doc/dwarfsck.md

@@ -74,9 +74,15 @@ pcmaudio/waveform
   Enable logging context regardless of level. By default, context is enabled
   if the level is `verbose`, `debug` or `trace`.
 
-- `--help`:
+- `-h`, `--help`:
   Show program help, including option defaults.
 
+- `--man`:
+  If the project was built with support for built-in manual pages, this
+  option will show the manual page. If supported by the terminal and a
+  suitable pager (e.g. `less`) is found, the manual page is displayed
+  in the pager.
+
 ## AUTHOR
 
 Written by Marcus Holland-Moritz.

doc/dwarfsextract.md

@@ -99,6 +99,12 @@ to disk:
 - `-h`, `--help`:
   Show program help, including option defaults.
 
+- `--man`:
+  If the project was built with support for built-in manual pages, this
+  option will show the manual page. If supported by the terminal and a
+  suitable pager (e.g. `less`) is found, the manual page is displayed
+  in the pager.
+
 ## AUTHOR
 
 Written by Marcus Holland-Moritz.

doc/mkdwarfs.md

@@ -423,6 +423,12 @@ Most other options are concerned with compression tuning:
   Show full usage with all options, including defaults, compression level
   detail and supported compression algorithms.
 
+- `--man`:
+  If the project was built with support for built-in manual pages, this
+  option will show the manual page. If supported by the terminal and a
+  suitable pager (e.g. `less`) is found, the manual page is displayed
+  in the pager.
+
 ## EXIT CODES
 
 Upon successful completion, `mkdwarfs` will exit with exit code 0. If an