chronyc, p4, authconfig, zegrep: update more info link (#19317)

Author: Managor

pages/common/chronyc.md

@@ -1,7 +1,7 @@
 # chronyc
 
 > Query the Chrony NTP daemon.
-> More information: <https://chrony-project.org/doc/4.6.1/chronyc.html>.
+> More information: <https://chrony-project.org/doc/latest/chronyc.html>.
 
 - Start `chronyc` in interactive mode:
 

pages/common/p4.md

@@ -1,7 +1,7 @@
 # p4
 
 > Perforce Version Control System.
-> More information: <https://ftp.perforce.com/perforce/r16.2/doc/manuals/cmdref/>.
+> More information: <https://help.perforce.com/helix-core/server-apps/cmdref/current/Content/CmdRef/commands.html>.
 
 - Log in to the Perforce service:
 

pages/common/zegrep.md

@@ -1,7 +1,7 @@
 # zegrep
 
 > Find extended `regex` patterns in compressed files using `egrep`.
-> More information: <https://www.unix.com/man-page/freebsd/1/zegrep/>.
+> More information: <https://manned.org/zegrep>.
 
 - Search for extended `regex` (supporting `?`, `+`, `{}`, `()` and `|`) in a compressed file (case-sensitive):
 

pages/linux/authconfig.md

@@ -1,7 +1,7 @@
 # authconfig
 
 > Configure system authentication resources.
-> More information: <https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/7/html/system-level_authentication_guide/authconfig-install>.
+> More information: <https://manned.org/authconfig>.
 
 - Display the current configuration (or dry run):