update MIKMATCH.md

Author: zazedd

MIK.md renamed to MIKMATCH.md

@@ -73,15 +73,15 @@ Where `PREDEFINED_CLASS` is one of:
 ### Variable substitution
 ```ocaml
 let%mikmatch re1 = {| "hello" |}
-let%mikmatch re2 = {| re1 "world" |}
+let%mikmatch re2 = {| re1 ' ' "world" |}
 
 let do_something = function%mikmatch
   | {|/ ... (re2) ... /|} -> ...
   | _ -> ...
 
 (* will expand to *)
 let do_something = function%mikmatch
-  | {|/ ... ("hello" "world") ... /|} -> ...
+  | {|/ ... ("hello" ' ' "world") ... /|} -> ...
   | _ -> ...
 ```
 

README.md

@@ -26,7 +26,7 @@ let%mikmatch var = {| some regex |}
 
 ### `%mikmatch`
 
-Full [%mikmatch guide](./MIK.md).
+Full [%mikmatch guide](./MIKMATCH.md).
 
 #### Quick Links
 - [Variable capture](./MIK.md#variable-capture)