Fix bash completion

[julio-b]

Got this error while building the latest PKGBUILD from aur:

==> Validating source files with sha256sums...
    aurutils-20.5.tar.gz ... Passed
==> Extracting sources...
  -> Extracting aurutils-20.5.tar.gz with bsdtar
==> Starting build()...
sed -e 's|AURUTILS_LIB_DIR|/usr/lib/aurutils|' \
    -e 's|AURUTILS_VERSION|20.5|' aur.in >aur
make[1]: Entering directory '/home/user/src/pkgbuilds/aurutils/src/aurutils-20.5/completions'
bash bash/aurutils.in >bash/aur
bash: ../lib/aur-build: No such file or directory
bash: ../lib/aur-chroot: No such file or directory
bash: ../lib/aur-fetch: No such file or directory
bash: ../lib/aur-pkglist: No such file or directory
bash: ../lib/aur-repo: No such file or directory
bash: ../lib/aur-repo-filter: No such file or directory
bash: ../lib/aur-srcver: No such file or directory
bash: ../lib/aur-vercmp: No such file or directory
bash: ../lib/aur-view: No such file or directory
make[1]: Nothing to be done for 'zsh'.
make[1]: Leaving directory '/home/user/src/pkgbuilds/aurutils/src/aurutils-20.5/completions'

[AladW]

👍