Fix misspelled name.

Doc/ref/ref2.tex

@@ -90,7 +90,7 @@ which is recognized also by GNU Emacs, and
 # vim:fileencoding=<encoding-name>
 \end{verbatim}
 
-which is recognized by Bram Moolenar's VIM. In addition, if the first
+which is recognized by Bram Moolenaar's VIM. In addition, if the first
 bytes of the file are the UTF-8 byte-order mark
 (\code{'\e xef\e xbb\e xbf'}), the declared file encoding is UTF-8
 (this is supported, among others, by Microsoft's \program{notepad}).