UI: fix links to file line anchors

The anchor is "#line-<number>", not just "#<number>" so the link to the
line was broken. The link works now.

The line isn't highlighted but it's another problem, see related issue.

Change-Id: I005517c80df8159621dc431102231c301757ebdd
Related: #154

ara/ui/templates/playbook.html

@@ -131,7 +131,7 @@
                             <a href="../results/{{ result.id }}.html">{{ task.name }}</a>
                         </td>
                         <td role="cell" data-label="Action" class="pf-m-fit-content">
-                            <a href="../files/{{ task.file.id }}.html#{{ task.lineno }}">{{ task.action }}</a>
+                            <a href="../files/{{ task.file.id }}.html#line-{{ task.lineno }}">{{ task.action }}</a>
                         </td>
                         <td role="cell" data-label="Duration" class="pf-m-fit-content">
                             {{ result.duration | format_duration }}

ara/ui/templates/result.html

@@ -10,7 +10,7 @@ <h1><strong>Details</strong></h1>
         <ul class="pf-c-list">
             <li><strong>Task</strong>: {{ result.task.name }}</a></li>
             <li><strong>Action</strong>: {{ result.task.action }}</li>
-            <li><strong>Path</strong>: <a href="../files/{{ result.task.file }}.html#{{ result.task.lineno }}">{{ result.task.path }}:{{ result.task.lineno }}</a>
+            <li><strong>Path</strong>: <a href="../files/{{ result.task.file }}.html#line-{{ result.task.lineno }}">{{ result.task.path }}:{{ result.task.lineno }}</a>
             <li><strong>Host</strong>: <a href="../hosts/{{ result.host.id }}.html">{{ result.host.name }}</a></li>
             <li><strong>Status</strong>: {{ result.status }}</li>
             <li><strong>Started</strong>: {{ result.started | format_date }}</li>