Changed "up-to-date" to "up to date"

Hi, I changed the hyphenation of "Your system is up-to-date" to "Your system is up to date". This is also the hyphenation that pacman uses and the one that is recommended by the Oxford English Dictionary (https://english.stackexchange.com/a/180617). I simply replaced all occurrences and I haven't tested if it breaks anything.

See also libpamac!2 (closed)

data/gnome-shell/pamac-updates@manjaro.org/extension.js

@@ -114,7 +114,7 @@ const PamacUpdateIndicator = new Lang.Class({
 		this._updatesChecker = new Pamac.UpdatesChecker();
 		this._updatesChecker.connect('updates-available', Lang.bind(this, this._onUpdatesAvailable));
 		this._applyConfig();
-		this._updateMenuExpander(false, _("Your system is up-to-date"));
+		this._updateMenuExpander(false, _("Your system is up to date"));
 
 		if (FIRST_BOOT && CHECK_INTERVAL > 0) {
 			// Schedule first check only if this is the first extension load
@@ -207,7 +207,7 @@ const PamacUpdateIndicator = new Lang.Class({
 			this.label.set_text("");
 			// Up to date
 			this.updateIcon.set_icon_name("pamac-tray-no-update");
-			this._updateMenuExpander(false, _("Your system is up-to-date"));
+			this._updateMenuExpander(false, _("Your system is up to date"));
 			UPDATES_LIST = []; // Reset stored list
 		}
 		UPDATES_PENDING = updatesCount;