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/renderer.h

@@ -43,7 +43,7 @@ enum
     /** Mouse is currently over the control. */
     wxCONTROL_CURRENT    = 0x00000010,
 
-    /** Selected item in e.g. listbox. */
+    /** Selected item in e.g.\ listbox. */
     wxCONTROL_SELECTED   = 0x00000020,
 
     /** (Check/radio button) is checked. */