Nitpick content-encoding. See #1100 (#1150)

* Nitpick content-encoding. See #1100

* Update jsonschema-validation.xml

Author: ioggstream

jsonschema-validation.xml

@@ -975,7 +975,8 @@
                     encodings used in MIME. This keyword is derived from MIME's
                     Content-Transfer-Encoding header, which was designed to map binary data
                     into ASCII characters.  It is not related to HTTP's Content-Encoding header,
-                    which is used for compressing HTTP request and response payloads.
+                    which is used to encode (e.g. compress or encrypt)
+                    the content of HTTP request and responses.
                 </t>
                 <t>
                     As "base64" is defined in both RFCs, the definition