Getting Icelandic docs translated for real this time

docs/is_IS.UTF-8/html/ADVANCED-STAMPS-HOWTO.html

@@ -17,15 +17,15 @@
             width="205"
             height="210"
             alt="Tux Paint"><br>
-        útgáfa 0.9.31        Advanced Stamps 'How-To'      </h1>
+        version 0.9.31        Advanced Stamps 'How-To'      </h1>
 
       <p>
-        Höfundarréttur &copy; 2006-2022 eftir Albert Cahalan and others; sjá <a href="../../AUTHORS.txt">AUTHORS-skrá</a>.<br>
+        Copyright &copy; 2006-2022 by Albert Cahalan and others; see <a href="../../AUTHORS.txt">AUTHORS.txt</a>.<br>
         <a href="https://tuxpaint.org/">https://tuxpaint.org/</a>
       </p>
 
       <p>
-         4. júní 2022      </p>
+        júní  4, 2022      </p>
     </center>
 
     <hr size="2"
@@ -34,10 +34,10 @@
     <table border="2"
            cellspacing="0"
            cellpadding="2"
-           summary="Efnisyfirlit">
+           summary="Table of Contents">
       <tr>
         <th>
-          Efnisyfirlit        </th>
+          Table of Contents        </th>
       </tr>
 
       <tr>
@@ -232,7 +232,7 @@
         Now you will paint away the existing edge fringe. Be sure that you are editing and viewing the WIP image. Frequent layer visibility changes will help you to see what you are doing. You are likely to use all of:      </p>
 
       <ul>
-        <li>composited over grænt (mask enabled)</li>
+        <li>composited over green (mask enabled)</li>
         <li>composited over magenta (mask enabled)</li>
         <li>original (the top or bottom layer)</li>
         <li>composited over the original (mask enabled)</li>