Fix

Author: jacob720

docs/how-to/config-server-guide.md

@@ -17,6 +17,7 @@ config_server.get_file_contents(FILE_PATH,reset_cached_result=True)
 ```
 By default, this will return the file's raw string output - which includes things like linebreaks. It is up to you to format this output - using `splitlines()` will get you a list where each item is a line in the file. `get_file_contents` has a `desired_return_type` parameter where you can instead ask for a `dict`, `bytes` or a `pydantic model`. The server will try and do the conversion, and respond with an HTTP error if the requested file is incompatible with that type, or a pydantic validation error if the data cannot be converted to the pydantic model provided. Custom [file converters](#file-converters) can be used to specify how a file should be converted to a dict or pydantic model.
 
+(file-converters)=
 # File converters
 
 Converters can be used to turn a file into a standard format server-side, reducing the complexity of reading config files client-side. Converters can convert config files to a `dict` or `pydantic model`, and the same `pydantic model` can be reconstructed client-side by the `get_file_contents` method. Available converters exist [here](https://github.com/DiamondLightSource/daq-config-server/blob/main/converters._converters.py) - see if there's a suitable converter you can use before adding your own. [This dictionary](https://github.com/DiamondLightSource/daq-config-server/blob/main/converters._file_converter_map.py) maps files to converters. Add the path of your config file and a suitable converter to this dictionary and it will automatically be used by the config server when a request for that file is made.