Fix premature truncation of brief descriptions in Doxygen comments.

Don't end the brief description at the first period if it's a period which is
part of "i.e." or "e.g.": escape the space following it to prevent Doxygen
from recognizing it as an end of sentence.

See #14866.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@73084 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

interface/wx/event.h

@@ -224,7 +224,7 @@ public:
     void SetTimestamp(long timeStamp = 0);
 
     /**
-        Test if this event should be propagated or not, i.e. if the propagation level
+        Test if this event should be propagated or not, i.e.\ if the propagation level
         is currently greater than 0.
     */
     bool ShouldPropagate() const;
@@ -2726,7 +2726,7 @@ public:
     int GetLinesPerAction() const;
 
     /**
-        Returns the logical mouse position in pixels (i.e. translated according to the
+        Returns the logical mouse position in pixels (i.e.\ translated according to the
         translation set for the DC, which usually indicates that the window has been
         scrolled).
     */