Fixed minor issues in "changes.xml".

docs/changes.xml

@@ -31,18 +31,6 @@ NGINX Unit updated to 1.27.0.
          date="" time=""
          packager="Andrei Belov <defan@nginx.com>">
 
-<change type="change">
-<para>
-Ruby Rack environment parameter "SCRIPT_NAME" support.
-</para>
-</change>
-
-<change type="change">
-<para>
-supporting empty strings in the "location" option of the "return" action.
-</para>
-</change>
-
 <change type="feature">
 <para>
 ability to specify a custom index file name when serving static files.
@@ -57,7 +45,20 @@ variables support in the "location" option of the "return" action.
 
 <change type="feature">
 <para>
-added new variable $request_uri with the same meaning as in NGINX.
+support empty strings in the "location" option of the "return" action.
+</para>
+</change>
+
+<change type="feature">
+<para>
+added a new variable, $request_uri, that includes both the path and the query
+parts as per RFC 3986, sections 3-4.
+</para>
+</change>
+
+<change type="feature">
+<para>
+Ruby Rack environment parameter "SCRIPT_NAME" support.
 </para>
 </change>
 
@@ -75,7 +76,7 @@ Ruby Sinatra applications don't work without custom logging.
 
 <change type="bugfix">
 <para>
-the controller process could crash when a chain with more than 4
+the controller process could crash when a chain of more than four
 certificates was uploaded.
 </para>
 </change>