docs: update icon and banner

Signed-off-by: Pranav C <pranavxc@gmail.com>

packages/noco-docs/content/en/index.md

@@ -8,7 +8,7 @@ menuTitle: 'Introduction'
 
 ## Welcome!
 
-![image](https://user-images.githubusercontent.com/35857179/194830573-d6f25da5-e2a0-42fb-aad9-7c8653554254.png)
+![image](/banner.png)
 
 NocoDB is a no-code database platform that allows teams to collaborate and build applications with ease of a familiar and intuitive spreadsheet interface. This allows even non-developers or business users to become software creators.
 
@@ -62,4 +62,4 @@ Our mission is to provide the most powerful no-code interface for databases whic
 
 Please refer to [here](https://github.com/nocodb/nocodb/blob/develop/.github/CONTRIBUTING.md) for the contribution guidelines.
 
-<img src="https://static.scarf.sh/a.png?x-pxid=c12a77cc-855e-4602-8a0f-614b2d0da56a" style="margin: 0px;" />
+<img src="https://static.scarf.sh/a.png?x-pxid=c12a77cc-855e-4602-8a0f-614b2d0da56a" style="margin: 0px;" />