try to fix formatting on readme

README.md

@@ -705,7 +705,7 @@ filters on the key values is performed.
 - `CLI::EscapedString`: 🚧 can be used to process an escaped string. The
   processing is equivalent to that used for TOML config files, see
   [TOML strings](https://toml.io/en/v1.0.0#string). With 2 notable exceptions.
-  `\`` can also be used as a literal string notation, and it also allows binary string notation see [binary strings](TO ADD).  The escaped string processing will remove outer quotes if present,  `"`will indicate a string with potential escape sequences, `'`and`\``
+  '`' can also be used as a literal string notation, and it also allows binary string notation see [binary strings](https://cliutils.github.io/CLI11/book/chapters/config.html).  The escaped string processing will remove outer quotes if present,  '"' will indicate a string with potential escape sequences, `'` and '`'
   will indicate a literal string and the quotes removed but no escape sequences
   will be processed. This is the same escape processing as used in config files.