fix: dev: [nextcloud] make ``nextcloud:config:simple:add`` support wider range of chars

Note: especially forward slashes ``/`` are now usable as values in
config.

nextcloud/lib/common

@@ -186,9 +186,9 @@ nextcloud:config:simple:add() {
     fi
 
     if grep "^  '$key' => '" "$CONFIGFILE" >/dev/null; then
-        sed -ri "s/^(  '$key' => ')(.*)(',)$/\1${value}\3/g" "$CONFIGFILE"
+        sed -ri "s|^(  '$key' => ')(.*)(',)$|\1${value}\3|g" "$CONFIGFILE"
         return 0
     fi
     ## Add '$key' => 'value', to the end of the file, before the closing paren.
-    sed -ri "s/^(\);)$/  '$key' => '${value}',\n\1/g" "$CONFIGFILE"
+    sed -ri "s|^(\);)$|  '$key' => '${value}',\n\1|g" "$CONFIGFILE"
 }