Re-indent images, since they're showing up as code

Author: puf

codelabs/chat/README.md

@@ -172,16 +172,16 @@ Next we'll send data to Firebase! In this step we'll allow the user to enter a m
                 android:text="Send" />
         </LinearLayout>
 
-    This layout puts a horizontal bar at the bottom that contains an `EditText`, where the user can enter their chat message, and a `Button` that they can click to send the message.
+  This layout puts a horizontal bar at the bottom that contains an `EditText`, where the user can enter their chat message, and a `Button` that they can click to send the message.
 
-        ![Activity_main.xml with footer](images/4_2.png)
+  ![Activity_main.xml with footer](images/4_2.png)
 
 2. In our `MainActivity.java` we'll now add variables for the `EditText` and `Button` at the end of the onCreate method:
 
         final EditText textEdit = (EditText) this.findViewById(R.id.text_edit);
         Button sendButton = (Button) this.findViewById(R.id.send_button);
 
-        ![MainActivity.java with EditText and Button bound](images/4_3.png)
+  ![MainActivity.java with EditText and Button bound](images/4_3.png)
 
 3. Next, we'll add a method that grabs the text from the input and send it to our Firebase database:
 
@@ -203,7 +203,7 @@ Next we'll send data to Firebase! In this step we'll allow the user to enter a m
 
   We hard-coded our user name for the moment. We'll use Firebase Authentication to make this dynamic in the last section of this code lab.
 
-    ![onCreate with sendButton implemented](images/4_4.png)
+  ![onCreate with sendButton implemented](images/4_4.png)
 
 5. If you now run the application in the emulator, you will see an input field with a Send button that sends the message to Firebase. Open the URL of your Firebase database, and you'll see it light up green as you add new messages.
 6. Open the Data tab in the Firebase Dashboard of your app. You'll see it light up green as you add new messages. Admit it, this is pretty cool!