fixed some typos

docs/tutorial/tutorial.html

@@ -1699,7 +1699,7 @@ <h2><a name="adding_dna_to_alignments">13. Adding DNA to Alignments</a></h2>
 alignment.
 
 <blockquote class="example"><i>Note that this contradicts the historical
-implementation of GFF but the current use is more internal consistent and is 
+implementation of GFF but the current use is more internally consistent and is 
 the method for target annoation in the proposed revision of GFF.
 </i></blockquote>
 
@@ -2990,7 +2990,7 @@ <h2><a name="DAS">21. Using GBrowse as a DAS Server</a></h2>
 repository.  Unix users can install Bio::Das with this command:
 
 <blockquote><pre>
-% <b>perl -MCPAN -e 'install Bio::Das'
+% <b>perl -MCPAN -e 'install Bio::Das'</b>
 </pre></blockquote>
 
 <p>
@@ -3043,7 +3043,7 @@ <h2><a name="DAS">21. Using GBrowse as a DAS Server</a></h2>
 genome.  For example release <i>hg16</i> of the human genome at UCSC
 corresponds to DAS URL http://genome.cse.ucsc.edu/cgi-bin/das.  A list
 of reference servers for various model organisms can be found at <a
-href="http://www.biodas.org"><http://www.biodas.org/a>.
+href="http://www.biodas.org">http://www.biodas.org</a>.
 
 <p>