pkgctl: update page; pkgctl-{build,db-update,release}: add page; pkgctl-version: remove page (#10808)

* pkgctl: update page; pkgctl-{build,db-update,release}: add page; pkgctl-version: remove page

---------

Signed-off-by: K.B.Dharun Krishna <kbdharunkrishna@gmail.com>
Co-authored-by: Lena <126529524+acuteenvy@users.noreply.github.com>

pages/linux/pkgctl.md

@@ -1,8 +1,32 @@
 # pkgctl
 
-> Unified command-line devtools frontend for Arch Linux.
+> Unified command-line frontend for Arch Linux devtools.
 > More information: <https://man.archlinux.org/man/pkgctl.1>.
 
-- Download PKGBUILD of a package in a folder named `package_name`:
+- View documentation for authenticating `pkgctl` with services like GitLab:
 
-`pkgctl repo clone --protocol=https {{package_name}}`
+`tldr pkgctl auth`
+
+- View documentation for building packages inside a clean `chroot`:
+
+`tldr pkgctl build`
+
+- View documentation for updating the binary repository as final release step:
+
+`tldr pkgctl db update`
+
+- View documentation for comparing package files using different modes:
+
+`tldr pkgctl diff`
+
+- View documentation for releasing build artifacts:
+
+`tldr pkgctl release`
+
+- View documentation for managing Git packaging repositories and their configuration:
+
+`tldr pkgctl repo`
+
+- Display version:
+
+`pkgctl version`