use href for stac spec banner, use html table

Author: jonhealy1

README.md

@@ -3,7 +3,7 @@
 <!-- markdownlint-disable MD033 MD041 -->
 
 <p align="left">
-  <img src="assets/stac-030-long.png" width=700>
+  <img src="https://raw.githubusercontent.com/stac-utils/stac-fastapi-elasticsearch-opensearch/refs/heads/main/assets/stac-030-long.png" width=700>
   <p align="left"><b>Elasticsearch and Opensearch backends for the stac-fastapi project.</b></p>
 </p>
 
@@ -15,15 +15,20 @@
 
 The following organizations have contributed time and/or funding to support the development of this project:
 
-<p align="left">
-  <a href="https://healy-hyperspatial.github.io/">
-    <img src="https://raw.githubusercontent.com/stac-utils/stac-fastapi-elasticsearch-opensearch/refs/heads/main/assets/hh-logo-blue.png" alt="Healy Hyperspatial" height="120">
-  </a>
-  &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
-  <a href="https://atomicmaps.io/">
-    <img src="https://raw.githubusercontent.com/stac-utils/stac-fastapi-elasticsearch-opensearch/refs/heads/main/assets/am-logo-black.png" alt="Atomic Maps" height="120">
-  </a>
-</p>
+<table>
+  <tr>
+    <td align="center" width="50%">
+      <a href="https://healy-hyperspatial.github.io/">
+        <img src="https://raw.githubusercontent.com/stac-utils/stac-fastapi-elasticsearch-opensearch/refs/heads/main/assets/hh-logo-blue.png" alt="Healy Hyperspatial" height="120">
+      </a>
+    </td>
+    <td align="center" width="50%">
+      <a href="https://atomicmaps.io/">
+        <img src="https://raw.githubusercontent.com/stac-utils/stac-fastapi-elasticsearch-opensearch/refs/heads/main/assets/am-logo-black.png" alt="Atomic Maps" height="120">
+      </a>
+    </td>
+  </tr>
+</table>
 
 ---