Default Learning Objectives to open (#1656)

A lot of people don't realise these are expandable.

Focusing on learning objectives is really important, let's put them in
people's faces.

Author: illicitonion

common-theme/layouts/_default/block-viewer.html

@@ -39,7 +39,7 @@ <h2>{{ .Title }} block viewer</h2>
                 {{ partial "time.html" . }}
               </header>
               {{ with .Params.Objectives }}
-                <details>
+                <details open>
                   <summary>
                     <h3 class="e-heading__5">Learning Objectives</h3>
                   </summary>

common-theme/layouts/partials/block/issue.html

@@ -26,7 +26,7 @@
       {{ $extractedObjectives := partial "strings/extract-github-objectives.html" $response.body }}
 
       {{ if gt (len $extractedObjectives) 0 }}
-        <details class="c-block__objectives">
+        <details open class="c-block__objectives">
           <summary>
             <h3 class="e-heading__4">Learning Objectives</h3>
           </summary>

common-theme/layouts/partials/block/local.html

@@ -19,7 +19,7 @@
       {{ partial "time.html" . }}
     </header>
     {{ if or $block.Params.Objectives $block.Params.Tasks }}
-      <details>
+      <details open>
         <summary><h3 class="e-heading__5">Learning Objectives</h3></summary>
         {{ with $block.Params.Objectives }}
           {{ partial "objectives/block.html" . }}

common-theme/layouts/partials/block/pd.html

@@ -56,7 +56,7 @@
           role="tabpanel"
           aria-labelledby="tab-label-intro">
           {{ with .Params.Objectives }}
-            <details class="c-objectives">
+            <details open class="c-objectives">
               <summary>
                 <h3 class="c-objectives__title e-heading__5">
                   Learning Objectives

common-theme/layouts/partials/block/readme.html

@@ -30,7 +30,7 @@
     </header>
     {{ $extractedObjectives := partial "strings/extract-github-objectives.html" $decodedContent }}
     {{ if gt (len $extractedObjectives) 0 }}
-      <details>
+      <details open>
         <summary><h3 class="e-heading__5">Learning Objectives</h3></summary>
         {{ range $extractedObjectives }}
           {{ . | page.RenderString }}