Fix missing space (#1958)

Signed-off-by: Euclid Ye <euclid.ye@huawei.com>

Author: yezhizhen

index.html

@@ -8299,7 +8299,7 @@ <h3>Ticks</h3>
  and a <var>list of events</var> and their properties. These steps
  must be equivalent to performing the given input device manipulations
  on <var>context</var>, such that trusted events corresponding to the
- entries in <var>list of events</var>are dispatched.
+ entries in <var>list of events</var> are dispatched.
 
 <aside class=note>
  <p>The list of events is not comprehensive; in particular the default