build: fix minor typo in autogen.sh

Fixes: https://bugs.freedesktop.org/show_bug.cgi?id=102452
Reviewed-by: Bryce Harrington <[email protected]>

Author: aleksander0m

autogen.sh

@@ -9,7 +9,7 @@ cd $srcdir
 
 AUTORECONF=`which autoreconf`
 if test -z $AUTORECONF; then
-        echo "*** No autoreconf found, please intall it ***"
+        echo "*** No autoreconf found, please install it ***"
         exit 1
 fi