Update guides.rst
Fix exec_command prototype for the plugin
CODING_GUIDELINES: Fix typo: / => \
Merge pull request #7974 from msabramo/CODING_GUIDELINES_slash_to_backslash

CODING_GUIDELINES: Fix typo: / => \
Correct typo: 'manaul' to 'manual'
Merge pull request #7981 from adamnbowen/patch-1

Correct typo: 'manaul' to 'manual'
Merge pull request #7972 from mscherer/fix_lxc

libvirt_lxc: Fix exec_command prototype for the plugin