puts homework in quotes

basics.html

@@ -1014,11 +1014,11 @@
 
         <section>
           <section id="homework" data-markdown>
-            # homework
+            # "homework"
           </section>
 
           <section id="homework-use-git" data-markdown>
-            ## homework #1
+            ## "homework" #1
             ### use git
 
             for each project you use ...
@@ -1036,7 +1036,7 @@
           </section>
 
           <section id="homework-collaborate" data-markdown>
-            ## homework #2
+            ## "homework" #2
             ### collaborate
 
             - talk with your colleagues
@@ -1048,7 +1048,7 @@
           </section>
 
           <section id="homework-feedback" data-markdown>
-            ## homework #3
+            ## "homework" #3
             ### feedback
 
             https://git.idiv.de/sc/edu/git-seminar