Update docs/source/interactive/htmlnotebook.txt

edited as per suggestions in pull request

docs/source/interactive/htmlnotebook.txt

@@ -247,14 +247,17 b' Configuration'
 -------------
 
 The IPython notebook server can be run with a variety of command line arguments. 
-To see a list of available options ehter:
+To see a list of available options enter:
 
-  $ ipython help notebook
+  $ ipython notebook --help 
 
 Defaults for these options can also be set by creating a file named 
 ipython_notebook_config.py in your IPython profile folder. The profile folder is
 a subfolder of your IPython directory (`ipython locate` will show you where that
-is). 
+is). To create default configuration files (with lots of info on available 
+options) use:
+
+  $ ipython profile create
 
 .. seealso: