docs(dlb): doc update MTA-5604

Author: SamyOubouaziz

pages/data-lab/quickstart.mdx

@@ -22,7 +22,7 @@ It is composed of the following:
 
   - Notebook: A JupyterLab service operating on a dedicated node type.
 
-Scaleway provides dedicated node types for both the notebook and the cluster. The cluster nodes are high-end machines built for intensive computations, featuring numerous CPUs and substantial RAM. 
+Scaleway provides dedicated node types for both the notebook and the cluster. The cluster nodes are high-end machines built for intensive computations, featuring powerful CPUs/GPUs, and substantial RAM. 
 
 The notebook, although capable of performing some local computations, primarily serves as a web interface for interacting with the Apache Spark cluster.
 
@@ -41,12 +41,11 @@ The notebook, although capable of performing some local computations, primarily
 
 3. Complete the following steps in the wizard:
     - Choose an Apache Spark version from the drop-down menu.
-    - Select a worker node configuration.
+    - Select a worker node configuration. For this procedure, we recommend selecting a CPU rather than a GPU.
     - Enter the desired number of worker nodes.
       <Message type="note">
       Provisioning zero worker nodes lets you retain and access you cluster and notebook configurations, but will not allow you to run calculations.
       </Message>
-    - Optionally, choose an Object Storage bucket as your source of data and the place to store the output of your operations.
     - Enter a name for your Data Lab.
     - Optionally, add a description and/or tags for your Data Lab.
     - Verify the estimated cost.
@@ -65,7 +64,7 @@ The notebook, although capable of performing some local computations, primarily
 
 ## How to run the demo file
 
-Each Distributed Data Lab comes with a default `quickstart.ipynb` demo file for testing purposes. This file contains a preconfigured notebook environment that requires no modification to run.
+Each Distributed Data Lab comes with a default `DatalabDemo.ipynb` demonstration file for testing purposes. This file contains a preconfigured notebook environment that requires no modification to run.
 
 Execute the cells in order to perform pre-determined operations on a dummy data set.
 
@@ -81,7 +80,7 @@ Execute the cells in order to perform pre-determined operations on a dummy data
         "name": "My Spark",
         "conf":{
             "spark.hadoop.fs.s3a.access.key": "your-api-access-key",
-            "spark.hadoop.fs.s3a.secret.key": "your-api-access-key",
+            "spark.hadoop.fs.s3a.secret.key": "your-api-secret-key",
             "spark.hadoop.fs.s3a.endpoint": "your-bucket-endpoint"
             }
     }