add periods

dev_docs/tutorials/sample_data.mdx

@@ -9,18 +9,18 @@ tags: ['kibana', 'onboarding', 'dev', 'architecture', 'tutorials']
 
 ## Installation from the UI
 
-1. Navigate to the home page
-2. Click **Add data**
-3. Click on the **Sample data** tab
-4. Select a dataset by clicking on the **Add data** button
+1. Navigate to the home page.
+2. Click **Add data**.
+3. Click on the **Sample data** tab.
+4. Select a dataset by clicking on the **Add data** button.
 
 ![Sample Data](../assets/sample_data.png)
 
 ## CSV Upload
 
-1. Navigate to the **Machine Learning** application
-2. Click on the **Data Visualizer** tab
-3. Click on **Select file** in the **Import data** container
+1. Navigate to the **Machine Learning** application.
+2. Click on the **Data Visualizer** tab.
+3. Click on **Select file** in the **Import data** container.
 
 ![CSV Upload](../assets/ml_csv_upload.png)