Fix indentation on code examples.

FAQ.md

@@ -10,19 +10,19 @@ Some x86_64 hosts running older versions of the Docker engine are not compatible
 
     If your host is affected you may see errors in your containers such as:
 
-    ```shell
+    ```text
     ERROR - Unable to determine java version; make sure Java is installed and callable
     ```
 
     Or
 
-    ```shell
+    ```text
     Failed to create CoreCLR, HRESULT: 0x80070008
     ```
 
     Or
 
-    ```shell
+    ```text
     WARNING :: MAIN : webStart.py:initialize:249 : can't start new thread
     ```
 
@@ -53,7 +53,7 @@ Some x86_64 hosts have issues running rdesktop based images even with the latest
 
     If your host is affected you may see errors in your containers such as:
 
-    ```shell
+    ```text
     Failed to close file descriptor for child process (Operation not permitted)
     ```