variables.html: replace internal links by auto-generated links

git-svn-id: https://svn.osgeo.org/grass/grass/trunk@63749 15284696-431f-4ddb-bdfa-cd5b030d7da7

lib/init/variables.html

@@ -1,14 +1,18 @@
 <!-- meta page description: GRASS variables and environment variables -->
 There are two types of variables:
 <ul>
-<li><a href="#enviro">shell environment</a> variables,</li>
-<li><a href="#gisenv">GRASS gisenv</a> variables.</li>
+<li><a href="#setting-shell-environment-variables">shell
+environment</a> variables,</li>
+<li><a href="#setting-grass-gisenv-variables">GRASS gisenv</a>
+variables.</li>
 </ul>
 
 There are a number of <i>shell</i> environment variable groups:
 <ul>
-<li><a href="#rendering">variables for rendering</a></li>
-<li><a href="#internal">variables for internal use</a></li>
+<li><a href="#list-of-selected-grass-environment-variables-for-rendering">variables
+for rendering</a></li>
+<li><a href="#list-of-selected-internal-grass-environment-variables">variables
+for internal use</a></li>
 </ul>
 
 <i>Note:</i> Any setting which needs to be modifiable by a GRASS module
@@ -65,7 +69,6 @@ g.gisenv MAPSET
 PERMANENT
 </pre></div>
 
-<a name="enviro"></a>
 <h2>List of selected (GRASS related) shell environment variables</h2>
 
 <blockquote>
@@ -324,7 +327,6 @@ PERMANENT
 	then $TEMP, otherwise /tmp.</dd>
 </dl>
 
-<a name="rendering"></a>
 <h3>List of selected GRASS environment variables for rendering</h3>
 <blockquote>
 [ In addition to those which are understood by specific <em>GRASS display
@@ -365,7 +367,6 @@ For specific driver-related variables see:
   <li><em><a href="htmldriver.html">HTML driver</a></em></li>
 </ul>
 
-<a name="internal"></a>
 <h3>List of selected internal GRASS environment variables</h3>
 <blockquote>
   [ These variables are intended <b>for internal use only</b> by the GRASS
@@ -421,7 +422,6 @@ For specific driver-related variables see:
     back afterwards.</dd>
 </dl>
 
-<a name="gisenv"></a>
 <h2>List of selected GRASS gisenv variables</h2>
 
 <blockquote>