minor comment change to fix a syntax highlighting bug in the robodoc html output.

Author: jacobwilliams

src/json_module.f90

@@ -2685,7 +2685,7 @@ subroutine json_get_chars(this, path, value, found)
 
                                         s = pre//c//post
 
-                                        n = n-1    !one character has been removed from the string ('\')
+                                        n = n-1    !backslash character has been removed from the string
 
                                     case('u')    !expecting 4 hexadecimal digits after the escape character    [\uXXXX]