Improve sentence grammar in 'Reporting rules' section in User Guide by adding missing hyphen

Author: mnwani-atlassian

docs/user-guide/README.md

@@ -47,7 +47,7 @@ module.exports = {
 See [the rule list](../rules/README.md) to get the `extends` & `rules` that this plugin provides.
 
 :::warning Reporting rules
-By default all rules from **base** and **essential** categories report ESLint errors. Other rules - because they're not covering potential bugs in the application report warnings. What does it mean? By default - nothing, but if you want - you can set up a treshold and break the build after a certain amount of warnings, instead of any. More informations [here](https://eslint.org/docs/user-guide/command-line-interface#handling-warnings).
+By default all rules from **base** and **essential** categories report ESLint errors. Other rules - because they're not covering potential bugs in the application - report warnings. What does it mean? By default - nothing, but if you want - you can set up a treshold and break the build after a certain amount of warnings, instead of any. More informations [here](https://eslint.org/docs/user-guide/command-line-interface#handling-warnings).
 :::
 
 ### Running ESLint from command line