Update g.gisenv.html (#232)

* Update g.gisenv.html, see https://trac.osgeo.org/grass/ticket/3997

general/g.gisenv/g.gisenv.html

@@ -144,8 +144,9 @@ compatible with some other UNIX shells.
 <p>
 By default the GRASS variables are stored in <em>gisrc</em> file
 (defined by environmental
-variable <em>GISRC</em>). If <b>store=mapset</b> is given than the
-variables are stored in <tt>$GISDBASE/$LOCATION_NAME/$MAPSET/VAR</tt>.
+variable <em>GISRC</em>). If <b>store=mapset</b> is given then the
+variables are stored in <tt>&lt;gisdbase&gt;/&lt;location&gt;/&lt;mapset&gt;/VAR</tt>
+after the current GRASS session is closed.
   
 <h3>GRASS Debugging</h3>