feat: add threadx logo

Change-Id: Ic20d39ed6a64bf24e90822db84e4bcd658936496

workinggroups/assets/images/threadx.png

diff --git a/workinggroups/assets/images/threadx.png b/workinggroups/assets/images/threadx.png
new file mode 100644
index 0000000..9331216
--- /dev/null
+++ b/workinggroups/assets/images/threadx.png
Binary files differ

workinggroups/content/en_explore.php

diff --git a/workinggroups/content/en_explore.php b/workinggroups/content/en_explore.php
index 7aeae9c..805f7ce 100644
--- a/workinggroups/content/en_explore.php
+++ b/workinggroups/content/en_explore.php
@@ -47,9 +47,9 @@
       <div class="bordered-box bordered-box-light flex-column">
         <div class="box-header vertical-align flex-column-mobile padding-left-10">
           <div class="collaboration-card-header col-xs-24 col-sm-16 vertical-align justify-left-desktop">
-            <p class="h4 margin-0">
-              <strong>Eclipse ThreadX</strong>
-            </p>
+            <a href="https://threadx.io/">
+              <img style="height:40px;" src="/org/workinggroups/assets/images/threadx.png" alt="ThreadX Interest Group's logo">
+            </a>
           </div>
           <div class="col-xs-24 col-sm-8 fw-700 vertical-align">
             Status: Active
@@ -113,7 +113,7 @@
       <div class="bordered-box bordered-box-light flex-column">
         <div class="box-header vertical-align flex-column-mobile padding-left-10">
           <div class="col-xs-24 col-sm-16 vertical-align justify-left-desktop">
-            <a href="https://openmobility.eclipse.org/" style="color: black">
+            <a href="https://openmobility.eclipse.org/">
               <img style="height:40px;" src="https://www.eclipse.org/org/workinggroups/assets/images/wg-openmobility.svg" alt="openMobility Interest Group's logo">
             </a>
           </div>