Remove whitespace after backslash, thanks to Pierre Labastie for the report.

git-svn-id: http://svn.linuxfromscratch.org/LFS/trunk/BOOK@9772 4aa44e1e-78dd-0310-a6d2-fbcd4c07a689

chapter06/gcc.xml

@@ -76,7 +76,7 @@ cd ../gcc-build</userinput></screen>
 <screen><userinput remap="configure">../gcc-&gcc-version;/configure --prefix=/usr            \
                        --libexecdir=/usr/lib    \
                        --enable-shared          \
-                       --enable-threads=posix   \ 
+                       --enable-threads=posix   \
                        --enable-__cxa_atexit    \
                        --enable-clocale=gnu     \
                        --enable-languages=c,c++ \