build(install): actually install declare completion (scop#504)

algorythmic · web-flow · commit 196a8f6a8d73 · 2021-03-01T20:42:23.000+02:00
After scop@3671cee the `declare' completion and its links were not getting installed.
diff --git a/completions/Makefile.am b/completions/Makefile.am
@@ -77,6 +77,7 @@ bashcomp_DATA = 2to3 \
 		cvs \
 		cvsps \
 		dd \
+		declare \
 		deja-dup \
 		desktop-file-validate \
 		dhclient \
