Update external/lab/quarks-chemical-platform/quarks-chemical-platform.md

external/lab/quarks-chemical-platform/quarks-chemical-platform.md

 # Quarks - Chemical platform
 
-## 1. How to access Quarks?
+## How to access Quarks?
 
 https://quarks.lcsb.uni.lu 
 
@@ -10,13 +10,13 @@ SSO connection means connection with Uni credentials. name.lastname@uni.lu and a
 
 (VPN connection is required if not connected to the local network)
 
-## 2. Chemical platform
+## Chemical platform
 
 <div align="center">
 <img src="img/1.png">
 </div>
 
-### 2.1 PRODUCTS 
+### Products 
 This section is used to look for a chemical or to add a new one. When you have found the product you were looking for, you have access to a lot of information related to health and safety and to the inventory.
 
 You can use different criteria to find your product of interest and press _Filter_