[Docs] Fix shell command formatting and line breaking

docs/android_test_instructions.md

 # Android Test Instructions
 
 Device Setup Tests are runnable on physical devices or emulators. See the
 instructions below for setting up either a physical device or an emulator.
 
 [TOC]
 
 ## Physical Device Setup **ADB Debugging**
 
 In order to allow the ADB to connect to the device, you must enable USB
@@ skipping 114 matching lines @@
 out\_android, then do `export CHROMIUM_OUT_DIR=out_android` before running the
 command below.
 
 ## INSTALL\_FAILED\_CONTAINER\_ERROR or INSTALL\_FAILED\_INSUFFICIENT\_STORAGE
 
 If you see this error when test\_runner.py is attempting to deploy the test
 binaries to the AVD emulator, you may need to resize your userdata partition
 with the following commands:
 
 ```shell
-# Resize userdata partition to be 1G resize2fs
-android_emulator_sdk/sdk/system-images/android-19/x86/userdata.img 1G
+# Resize userdata partition to be 1G
+resize2fs android_emulator_sdk/sdk/system-images/android-19/x86/userdata.img 1G
 
 # Set filesystem parameter to continue on errors; Android doesn't like some
 # things e2fsprogs does.
-tune2fs -e continue
-android_emulator_sdk/sdk/system-images/android-19/x86/userdata.img
+tune2fs -e continue android_emulator_sdk/sdk/system-images/android-19/x86/userdata.img
 ```
 
 ## Symbolizing Crashes
 
 Crash stacks are logged and can be viewed using adb logcat. To symbolize the
 traces, pipe the output through
 `third_party/android_platform/development/scripts/stack`. If you build in an
 output directory other than "out", pass
 `--chrome-symbols-dir=out_directory/{Debug,Release}/lib` to the script as well.
 
@@ skipping 103 matching lines @@
 See
 https://sites.google.com/a/chromium.org/dev/developers/testing/webkit-layout-tests
 
 ## Running GPU tests
 
 (e.g. the "Android Debug (Nexus 7)" bot on the chromium.gpu waterfall)
 
 See http://www.chromium.org/developers/testing/gpu-testing for details. Use
 --browser=android-content-shell. Examine the stdio from the test invocation on
 the bots to see arguments to pass to src/content/test/gpu/run\_gpu\_test.py.