Reuse two strings, add missing translation.

Source/control.cpp

@@ -564,7 +564,7 @@ bool CheckTextCommand(const std::string_view text)
 
 	auto textCmdIterator = c_find_if(TextCmdList, [&](const TextCmdItem &elem) { return text.find(elem.text) == 0 && (text.length() == elem.text.length() || text[elem.text.length()] == ' '); });
 	if (textCmdIterator == TextCmdList.end()) {
-		InitDiabloMsg(StrCat(_("Command \""), text, "\" is unknown."));
+		InitDiabloMsg(StrCat(_("Command "), "\"", text, "\"", _(" is unknown.")));
 		return true;
 	}
 

Translations/pl.po

@@ -7,7 +7,7 @@
 msgid ""
 msgstr ""
 "Project-Id-Version: DevilutionX\n"
-"POT-Creation-Date: 2023-11-14 19:06+0100\n"
+"POT-Creation-Date: 2023-11-14 19:26+0100\n"
 "PO-Revision-Date: \n"
 "Last-Translator: \n"
 "Language-Team: \n"
@@ -1037,7 +1037,7 @@ msgstr "Wyślij Wiadomość"
 msgid "Available Commands:"
 msgstr ""
 
-#: Source/control.cpp:377
+#: Source/control.cpp:377 Source/control.cpp:567
 msgid "Command "
 msgstr ""
 
@@ -1161,7 +1161,7 @@ msgid "Show seed infos for current level."
 msgstr ""
 
 #: Source/control.cpp:567
-msgid "Command \""
+msgid " is unknown."
 msgstr ""
 
 #: Source/control.cpp:1049