move back from mathics3-development to mathics-development

Author: rocky

index.html

@@ -209,8 +209,8 @@ <h3 id="django">Mathics-Django</h3>
 
           <p>
             For more information on how to install Mathics3 see
-            <a href="https://Mathics3-development-guide.readthedocs.io/en/latest/installing.html">
-              Mathics3-development-guide.readthedocs.io/en/latest/installing
+            <a href="https://mathics-development-guide.readthedocs.io/en/latest/installing.html">
+              mathics-development-guide.readthedocs.io/en/latest/installing
             </a>.
         </div>
       </section>
@@ -223,8 +223,8 @@ <h2 id="doc">Documentation</h2>
             Documentation for the Mathics system is provided in the PDF format
             (<a href="https://mathics.org/docs/mathics-latest.pdf">download the
             PDF</a>). You can find internal documentation at
-            <a href="https://Mathics3-development-guide.readthedocs.io/en/latest/">
-            Mathics3-development-guide.readthedocs.io/en/latest/</a>.
+            <a href="https://mathics-development-guide.readthedocs.io/en/latest/">
+            mathics-development-guide.readthedocs.io/en/latest/</a>.
           </p>
 	  <p>
 	    <div class="image">
@@ -269,8 +269,8 @@ <h2>Contributing</h2>
         <div class="inner align-left">
           <p>
             Please check out our contributing guide at
-            <a href="https://Mathics3-development-guide.readthedocs.io/en/latest/extending/developing-code/contributing-developing.html">
-	      https://Mathics3-development-guide.readthedocs.io/en/latest/extending/developing-code/contributing-developing.html</a>.
+            <a href="https://mathics-development-guide.readthedocs.io/en/latest/extending/developing-code/contributing-developing.html">
+	      https://mathics-development-guide.readthedocs.io/en/latest/extending/developing-code/contributing-developing.html</a>.
           </p>
           <p><strong>Developers wanted! Please get in touch if you want to be part of this awesome project.</strong></p>
         </div>