update completions files

Signed-off-by: Arthur Zamarin <arthurzam@gentoo.org>

Author: arthurzam

completion/bash/pkgdev

@@ -72,6 +72,7 @@ _pkgdev() {
                 -s --scan
                 -A --ask
                 --mangle
+                --signoff
                 -m --message
                 -M --message-template
                 -u --update

completion/zsh/_pkgdev

@@ -47,6 +47,7 @@ case $state in
           {'(--scan)-s','(-s)--scan'}'[run pkgcheck against staged changes]' \
           {'(--ask)-A','(-A)--ask'}'[confirm creating commit with QA errors]' \
           '--mangle[forcibly enable/disable file mangling]' \
+          '--signoff[add a Signed-off-by trailer]' \
           \*{--message,-m}'[specify commit message]:message' \
           {'(--message-template)-M','(-M)--message-template'}'[use commit message template from specified file]:template:_files' \
           {'(--update)-u','(-u)--update'}'[stage all changed files]' \