Merge branch 'feature/update-style-and-components' of https://github.com/iExecBlockchainComputing/documentation into feature/update-style-and-components

Author: ErwanDecoster

src/get-started/helloWorld/3-buildIApp.md

@@ -301,7 +301,7 @@ simulating how it will run in the iExec network's TEE environment.
 
 - If you get <code>Error: Docker daemon is not accessible</code>: Make sure
   Docker is installed and running.
-- if you get <code>Error: Failed to locate iApp project root</code>: Ensure you
+- If you get <code>Error: Failed to locate iApp project root</code>: Ensure you
   are in your project folder before proceeding.
 
 :::