Take '(troubleshooting)' out of inline

This will be useful as we'll reuse the same inlines on
/doc/first_steps/bug_reporting/tails_does_not_start at some point.

wiki/src/install/inc/steps/not_at_all.inline.mdwn

-   Tails does not start at all (troubleshooting)
-   ---------------------------------------------
+   Tails does not start at all
+   ---------------------------
 
    The following section applies if the <span class="guilabel">Boot Tails</span>
    menu does not appear when starting on a USB stick.

wiki/src/install/inc/steps/not_entirely.inline.mdwn

-   Tails does not start entirely (troubleshooting)
-   -----------------------------------------------
+   Tails does not start entirely
+   -----------------------------
 
    The following section applies if the <span class="guilabel">Boot Tails</span> menu appears but not
    <span class="application">Tails Greeter</span> when starting Tails.

wiki/src/install/inc/steps/restart_first_time.inline.mdwn

@@ -69,6 +69,9 @@ from a Tails DVD in a similar way.</p>
    [[!toggleable id="not_at_all" text="""
    <span class="hide">[[!toggle id="not_at_all" text=""]]</span>
 
+   Troubleshooting
+   ---------------
+
    [[!inline pages="install/inc/steps/not_at_all.inline" raw="yes"]]
 
    """]]
@@ -106,6 +109,9 @@ from a Tails DVD in a similar way.</p>
    [[!toggleable id="not_entirely" text="""
    <span class="hide">[[!toggle id="not_entirely" text=""]]</span>
 
+   Troubleshooting
+   ---------------
+
    [[!inline pages="install/inc/steps/not_entirely.inline" raw="yes"]]
 
    """]]

wiki/src/install/inc/steps/restart_second_time.inline.mdwn

@@ -34,6 +34,9 @@
    [[!toggleable id="not_at_all" text="""
    <span class="hide">[[!toggle id="not_at_all" text=""]]</span>
 
+   Troubleshooting
+   ---------------
+
    [[!inline pages="install/inc/steps/not_at_all.inline" raw="yes"]]
 
    """]]