docs(tree-sitter): add doctor checks for flag

add in a check ala lsp, this has been applied to every module with tree
sitter support

modules/lang/json/doctor.el

@@ -3,3 +3,7 @@
 (when (and (featurep! :completion ivy)
            (not (executable-find "jq")))
   (warn! "Couldn't find jq. counsel-jq won't work." ))
+
+(assert! (or (not (featurep! +tree-sitter))
+             (featurep! :tools tree-sitter))
+         "This module requires (:tools tree-sitter)")