Fix broken backslashes in Unicode strings section.

This closes bug #123730.

Doc/tut/tut.tex

@@ -771,7 +771,7 @@ special characters in the string, you can do so by using the Python
 u'Hello World !'
 \end{verbatim}
 
-The escape sequence \code{\\u0020} indicates to insert the Unicode
+The escape sequence \code{\e u0020} indicates to insert the Unicode
 character with the HEX ordinal 0x0020 (the space character) at the
 given position.
 
@@ -784,7 +784,7 @@ simplified.
 For experts, there is also a raw mode just like for normal
 strings. You have to prepend the string with a small 'r' to have
 Python use the \emph{Raw-Unicode-Escape} encoding. It will only apply
-the above \code{\\uXXXX} conversion if there is an uneven number of
+the above \code{\e uXXXX} conversion if there is an uneven number of
 backslashes in front of the small 'u'.
 
 \begin{verbatim}