chore(injections)!: update injection syntax to 0.9

Since 0.9, @lang syntax is still available as fallback but will soon be deprecated.
Because of that, new syntax should be adopted once 0.9 becomes the
baseline requirements for nvim-treesitter

- update health check
- update doc

queries/go/injections.scm

@@ -1,4 +1,5 @@
-(comment) @comment
+((comment) @injection.content 
+ (#set! injection.language "comment"))
 
 (call_expression
   (selector_expression) @_function (#any-of? @_function
@@ -10,4 +11,10 @@
                                     "regexp.MustCompile"
                                     "regexp.MustCompilePOSIX")
   (argument_list
-    . [(raw_string_literal) (interpreted_string_literal)] @regex (#offset! @regex 0 1 0 -1)))
+    . 
+    [
+     (raw_string_literal) 
+     (interpreted_string_literal)
+    ] @injection.content
+    (#offset! @injection.content 0 1 0 -1)
+    (#set! injection.language "regex")))