Fixed various page and section headings

docs/getting-started/downloading-lens.md

@@ -5,7 +5,7 @@ Lens is lightweight and simple to install. You'll be up and running in just a fe
 
 ## System requirements
 
-You can review the [System Requirements](/supporting/requirements/) to check if your computer configuration is supported.
+Review the [System Requirements](/supporting/requirements/) to check if your computer configuration is supported.
 
 
 ## macOS

docs/getting-started/preferences.md

@@ -1,7 +1,7 @@
 # Preferences
 
 
-## Color Themes
+## Color themes
 
 Color themes let you modify the colors in Lens user interface to suit your preferences and work environment.
 
@@ -9,7 +9,7 @@ In Lens, open the Preferences with **File** > **Preferences**. (**Code** > **Pre
 ![Color Theme](images/color-theme.png)
 
 
-## Telemetry & Usage Tracking
+## Telemetry & usage tracking
 
 Lens collects telemetry data, which is used to help understand how to improve the product. For example, this usage data helps to debug issues, such as slow start-up times, and to prioritize new features. While we appreciate the insights this data provides, we also know that not everyone wants to send usage data and you can disable telemetry as described in [disable telemetry reporting](#disable-telemetry-reporting). You can also read our [privacy statement](https://www.mirantis.com/company/privacy-policy/) to learn more.