Remove excess empty spaces from chapter6 gcc.

git-svn-id: http://svn.linuxfromscratch.org/LFS/trunk/BOOK@10651 4aa44e1e-78dd-0310-a6d2-fbcd4c07a689

chapter06/gcc.xml

@@ -64,16 +64,16 @@ cd ../gcc-build</userinput></screen>
 
     <para>Prepare GCC for compilation:</para>
 
-<screen><userinput remap="configure">SED=sed                          \
-../gcc-&gcc-version;/configure           \
-     --prefix=/usr               \
-     --enable-shared             \
-     --enable-threads=posix      \
-     --enable-__cxa_atexit       \
-     --enable-clocale=gnu        \
-     --enable-languages=c,c++    \
-     --disable-multilib          \
-     --disable-bootstrap         \
+<screen><userinput remap="configure">SED=sed                       \
+../gcc-&gcc-version;/configure        \
+     --prefix=/usr            \
+     --enable-shared          \
+     --enable-threads=posix   \
+     --enable-__cxa_atexit    \
+     --enable-clocale=gnu     \
+     --enable-languages=c,c++ \
+     --disable-multilib       \
+     --disable-bootstrap      \
      --with-system-zlib</userinput></screen>
 
     <para>Note that for other languages, there are some prerequisites that