Fix markdown list

Author: simonw

README.md

@@ -28,7 +28,7 @@ This collection is partly **an experiment** in how much it's possible to get don
 - [JSON to YAML](https://tools.simonwillison.net/json-to-yaml) - convert JSON to YAML, showing different styles of YAML output
 - [YAML Explorer](https://tools.simonwillison.net/yaml-explorer) - nested hierarchy explorer for YAML files, which can be loaded from an external URL and have their expand/collapse state persisted in the URL to the tool
 - [Word Counter](https://tools.simonwillison.net/word-counter) - count words across multiple blocks of text, persisted to localStorage
-  [PHP Deserializer](https://tools.simonwillison.net/php-deserializer) - paste in serealized PHP data, get back JSON
+- [PHP Deserializer](https://tools.simonwillison.net/php-deserializer) - paste in serealized PHP data, get back JSON
 
 ## LLM playgrounds and debuggers