Update cs.json (#1031)

Updated the translation of ‘msg-installing-plugin’ by changing one word to better align with the terminology and context used in other similar plugin installation messages, ensuring consistency and clarity across the user interface.

cs.json

@@ -360,7 +360,7 @@
 			"label-unsupported": "This plugin does not support your device.",
 			"button-update": "Aktualizovat",
 			"label-no-readme": "Tento plugin neposkytlu README soubor.",
-			"msg-installing-plugin": "Instaluje se dompněk \"{{name}}\"...",
+			"msg-installing-plugin": "Instaluje se plugin \"{{name}}\"...",
 			"msg-failed-to-install-plugin": "Nepodařilo se nainstalovat plugin \"{{name}}\".",
 			"msg-successfully-installed-plugin": "Plugin \"{{name}}\" byl úspěšně nainstalován.",
 			"label-installed-plugins": "Nainstalované pluginy",
@@ -2141,4 +2141,4 @@
 		"theme-with-count": "{{count}} theme",
 		"theme-with-count_plural": "{{count}} themes"
 	}
-}
+}