Updating options docs (webdriverio#3260)

## Proposed changes

According webdriverio#3211

## Types of changes

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[//]: # (_Put an `x` in the boxes that apply_)

- [ ] Bugfix (non-breaking change which fixes an issue)
- [ ] New feature (non-breaking change which adds functionality)
- [ ] Breaking change (fix or feature that would cause existing functionality to not work as expected)

## Checklist

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- [ ] I have added tests that prove my fix is effective or that my feature works
- [ ] I have added necessary documentation (if appropriate)

## Further comments

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### Reviewers: @webdriverio/technical-committee

docs/Options.md

@@ -17,7 +17,7 @@ Protocol to use when communicating with the driver server.
 Type: `String`<br>
 Default: `http`
 
-### host
+### hostname
 Host of your driver server.
 
 Type: `String`<br>
@@ -171,7 +171,7 @@ reporters: [
 ]
 ```
 
-### _Hooks_
+## Hooks
 
 WebdriverIO allows you to set hooks to interfere into the test lifecycle in order to e.g. take screenshot if a test fails. Every hook has as parameter specific information about the lifecycle (e.g. information about the test suite or test). The following hooks are available: `onPrepare`, `beforeSession`, `before`, `beforeSuite`, `beforeHook`, `afterHook`, `beforeTest`, `beforeCommand`, `afterCommand`, `afterTest`, `afterSuite`, `after`, `afterSession`, `onComplete`, `beforeFeature`, `beforeScenario`, `beforeStep`, `afterStep`, `afterScenario`, `afterFeature`.