Fix some typos

templates/lxc-ubuntu-cloud.in

@@ -133,7 +133,7 @@ LXC Container configuration for Ubuntu Cloud images.
 Generic Options
 [ -r | --release <release> ]: Release name of container, defaults to host
 [ --rootfs <path> ]: Path in which rootfs will be placed
-[ -a | --arch ]: Arhcitecture of container, defaults to host architecture
+[ -a | --arch ]: Architecture of container, defaults to host architecture
 [ -T | --tarball ]: Location of tarball
 [ -d | --debug ]: Run with 'set -x' to debug errors
 [ -s | --stream]: Use specified stream rather than 'released'

templates/lxc-ubuntu.in

@@ -239,7 +239,7 @@ cleanup()
 suggest_flush()
 {
     echo "Container upgrade failed.  The container cache may be out of date,"
-    echo "in which case flushing the case (see -F in the hep output) may help."
+    echo "in which case flushing the cache (see -F in the help output) may help."
 }
 
 download_ubuntu()