update JSON metadata for API bump

Author: VariableVixen

PositionalGuide/PositionalGuide.json

@@ -4,7 +4,7 @@
 	"Description": "If you have a hard time telling whether you're in the right spot for positional attacks, this plugin can draw guidelines on your screen to help you tell where you need to be.",
 	"RepoUrl": "https://github.com/VariableVixen/PositionalAssistant",
 	"Punchline": "Never guess whether you'll make that positional again!",
-	"DalamudApiLevel": 12,
+	"DalamudApiLevel": 13,
 	"Tags": [
 		"positional",
 		"guideline",