adb-{install, reverse, shell}: simplify descriptions (#14011)

* Update adb-shell.md

* Update adb-install.md

* Update adb-reverse.md

pages/common/adb-install.md

@@ -1,6 +1,6 @@
 # adb install
 
-> Android Debug Bridge Install: push packages to an Android emulator instance or connected Android devices.
+> Push packages to a connected Android device or emulator.
 > More information: <https://developer.android.com/tools/adb>.
 
 - Push an Android application to an emulator/device:

pages/common/adb-reverse.md

@@ -1,6 +1,6 @@
 # adb reverse
 
-> Android Debug Bridge Reverse: reverse socket connections from an Android emulator instance or connected Android devices.
+> Reverse socket connections from a connected Android device or emulator.
 > More information: <https://developer.android.com/tools/adb>.
 
 - List all reverse socket connections from emulators and devices:

pages/common/adb-shell.md

@@ -1,6 +1,6 @@
 # adb shell
 
-> Android Debug Bridge Shell: run remote shell commands on an Android emulator instance or connected Android devices.
+> Run shell commands on a connected Android device or emulator.
 > More information: <https://developer.android.com/tools/adb>.
 
 - Start a remote interactive shell on the emulator or device: