minor change to readme.md

Author: jacobwilliams

README.md

@@ -107,7 +107,7 @@ for more examples. The source files may be found in `src/tests/`.
 
         ! clean up
         call json%destroy()
-	if (json_failed()) stop 1
+        if (json_failed()) stop 1
 
     end program example1
 ```
@@ -183,7 +183,7 @@ of `json_value` pointers.  For more examples see unit tests 2,4 and 7 in `src/te
 
         !cleanup:
         call json_destroy(p)
-	if (json_failed()) stop 1
+        if (json_failed()) stop 1
 
     end program example2
 ```