Rename API reference with "command line tools"

It is what that section is about

ges-launch.md

@@ -1,3 +1,7 @@
+---
+short-description: The GStreamer Editing Services prototyping tool
+...
+
 # ges-launch-1.0
 
 **ges-launch-1.0** creates a multimedia [timeline](https://phabricator.freedesktop.org/w/gstreamer/gst-editing-services/ges-timeline/) and plays it back, or renders it to the specified format.

gstreamer-command-line-tools.md

@@ -0,0 +1,8 @@
+---
+short-description: Command line tools
+...
+
+# Command line tools
+
+GStreamer comes with several command line tools mostly to help developers get started
+and prototype there application.

sdk-api-reference.md

@@ -1,10 +0,0 @@
----
-short-description: API reference
-...
-
-# API reference
-
-The complete documentation for the GStreamer API, automatically
-generated from the source code of GStreamer is available [here]
-
-[here]: https://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer/html/

sitemap.txt

@@ -50,8 +50,8 @@ index.md
 		sdk-mac-osx-deployment.md
 		sdk-windows-deployment.md
 		sdk-multiplatform-deployment-using-cerbero.md
-	sdk-api-reference.md
-		sdk-gst-inspect.md
+	gstreamer-command-line-tools.md
+		gst-inspect.md
 		gst-launch.md
 		ges-launch.md
 	manual-index.md