[fix] issue reported by: make test.shell

$ make test.shell
    ./manage line 716:
    build_msg TEST "[reST markup] ${RST_FILES[@]}""
                                  ^-------------^ SC2145: Argument mixes string and array. Use * or separate argument.

Signed-off-by: Markus Heiser <markus.heiser@darmarit.de>

manage

@@ -713,7 +713,7 @@ test.robot() {
 }
 
 test.rst() {
-    build_msg TEST "[reST markup] ${RST_FILES[@]}"
+    build_msg TEST "[reST markup] ${RST_FILES[*]}"
     for rst in "${RST_FILES[@]}"; do
         pyenv.cmd rst2html.py --halt error "$rst" > /dev/null || die 42 "fix issue in $rst"
     done