Fix file name formatting in README.md

README.md

@@ -21,7 +21,7 @@ Rename rules:
 - `[E]`: File extension (e.g. "txt")
 - `[N]`: File name, same as "[F][.][E]" (e.g. "file")
 - `[D]`: File directory (e.g. "Folder")
-- `[N:a~b]` `[F:a~b]` `[E:a~b]` `[D:a~b]` `[P:a~b]`: File name from a to b, if a or b is less than 0, then count from the end of the string (e.g. [N1~3]="fil"   [N1~-2]="fi"   [N-3~-1]="ile")
+- `[N:a~b]` `[F:a~b]` `[E:a~b]` `[D:a~b]` `[P:a~b]`: File name from a to b, if a or b is less than 0, then count from the end of the string (e.g. `[N1~3]`="fil"   `[N1~-2]`="fi"   `[N-3~-1]`="ile")
 - `[S]`: File size in bytes (e.g. "1024")
 - `[T]` `[C]` `[W]` `[A]`: Current time or file last create/write/access time (e.g. "2019-01-01 00:00:00")
 - `[T]` `[C:format]` `[W:format]` `[A:format]`: Current time or file last create/write/access time with format, format is the same as strftime (e.g. "2019-01-01 00:00:00")