Update GettingStartedGuide (#513)

* Update GettingStartedGuide

Update heading to "Get started"

Relates-To: OLPEDGE-2768

Signed-off-by: Nataliia Plakhtii <ext-nataliia.plakhtii@here.com>

* Fix typo in Backward Compatibility section

Change "ABI" to "API"

Relates-To: OLPEDGE-2768

Signed-off-by: Nataliia Plakhtii <ext-nataliia.plakhtii@here.com>

Signed-off-by: Nataliia Plakhtii <ext-nataliia.plakhtii@here.com>

Author: nplakhtii

README.md

@@ -26,7 +26,7 @@ We try to develop and maintain our API in a way that preserves its compatibility
 
 For more information on Data API, see its <a href="https://developer.here.com/documentation/data-api/data_dev_guide/index.html" target="_blank">Developer Guide</a> and <a href="https://developer.here.com/documentation/data-api/api-reference.html" target="_blank">API Reference</a>.
 
-When new API is introduced in Data SDK for TypeScript, the old one is not deleted straight away. The standard API deprecation time is 6 months. It gives you time to switch to new code. However, we do not provide ABI backward compatibility.
+When new API is introduced in Data SDK for TypeScript, the old one is not deleted straight away. The standard API deprecation time is 6 months. It gives you time to switch to new code. However, we do not provide API backward compatibility.
 
 Learn more about deprecated methods, functions, and parameters in the Data SDK for TypeScript <a href="https://developer.here.com/documentation/sdk-typescript/api_reference/index.html"  target="_blank">API Reference</a> and <a href="https://github.com/heremaps/here-data-sdk-typescript/blob/master/CHANGELOG.md" target="_blank">changelog</a>.
 

docs/GettingStartedGuide.md

@@ -1,4 +1,4 @@
-# Getting Started Guide
+# Get started
 
 HERE Data SDK for TypeScript includes the core components to access the HERE APIs from any web-based application.