Merge pull request #169 from wgerlach/gh-pages

fix spelling

Author: mr-c

_episodes/16-file-formats.md

@@ -23,7 +23,7 @@ a file format initially for quick development before sharing your tool with
 others. You can browse existing file format listings for IANA [here][IANA] and
 for EDAM [here][EDAM].
 
-In the next tutorial, we explain  the `$namespace` and `$schema` section of the
+In the next tutorial, we explain  the `$namespaces` and `$schemas` section of the
 document in greater detail, so don't worry about these for now.
 
 Note that for added value `cwltool` can do some basic reasoning based on file