Update docs, remove password strong regex, hide tasks (#755)

* Update docs, remove password strong regex, hide tasks

* Update docs

docs/docs/index.mdx

@@ -10,7 +10,7 @@ import ThemedImage from '@theme/ThemedImage';
 # Introduction
 
 Twenty is an Open Source CRM.
-<ThemedImage sources={{light: "./img/preview-docs-light.png", dark:"./img/preview-docs-dark.png"}} style={{width:'100%', maxWidth:'800px'}}/>
+<ThemedImage sources={{light: "./img/light-doc-preview.png", dark:"./img/dark-doc-preview.png"}} style={{width:'100%', maxWidth:'800px'}}/>
 
 
 ## Why did we create Twenty?
@@ -24,11 +24,13 @@ We wish to create a tool that users will enjoy, and that engineers will want to
 
 ## Getting started
 
-There are three ways for you to get started which are documented in the left sidebar:
+There are three ways for you to get started with Twenty:
 - **Cloud:** the fastest and easiest way to try the app (it's free)
 - **Local:** if you're a developer and would like to experiment or contribute to the app
 - **Self-hosting:** if you want greater control over your data and to run the app on your own server
 
+See our [Getting Started](./start/getting-started/) guide to learn more.
+
 ## Contributing
 Contributions are what makes the open source community such an amazing place.  
 Code contributions through pull request are most welcome.