Document -Ycc in manpage (#2482)

Signed-off-by: r.b4rr10s <rodrigoedu11@gmail.com>

cmd.go

@@ -130,7 +130,7 @@ show specific options:
     -w --news             Print arch news
 
 yay specific options:
-    -c --clean            Remove unneeded dependencies
+    -c --clean            Remove unneeded dependencies (-cc to ignore optdepends)
        --gendb            Generates development package DB used for updating
 
 getpkgbuild specific options:

doc/yay.8

@@ -97,6 +97,10 @@ used when migrating to Yay from another AUR helper.
 .B \-c, \-\-clean
 Remove unneeded dependencies.
 
+.TP
+.B \-cc
+Remove unneeded dependencies, including packages optionally required by any other package.
+
 .SH SHOW OPTIONS (APPLY TO \-P AND \-\-show)
 .TP
 .B \-c, \-\-complete