Added alert banner for Earth API archival/replacement point#3

Author: Brazda, Tessa M. (JSC-IO111)[EAST2]

assets/html/header.html

@@ -37,10 +37,10 @@
 
   <header style = "box-shadow: 0px 4px 8px darkgrey !important;" class="usa-header usa-header-basic" role="banner" id = "myHeader">
 
-    <!-- <section class="alert">
+    <section class="alert">
       <span class="closebtn" onclick="this.parentElement.style.display='none';">&times;</span>
-      <strong>⚠ Please note</strong> that GeneLab API has been renamed/updated to Open Science Data Repository.
-    </section> -->
+      <strong>⚠ Please Note:</strong> This Earth API will be archived and replaced with <a href="https://www.earthdata.nasa.gov/">https://www.earthdata.nasa.gov/</a> soon. Please update your bookmarks or projects as needed.
+    </section>
 
     <div class="usa-nav-container">
       <div class="usa-navbar">