doc: add Quick Reference section to User guide

11 jobs for <span class="ref-name">policy-slice</span> in 384 minutes and 15 seconds (queued for 4 seconds)
Status Job ID Name Coverage
  Build
passed #285910
docker linux amd64
archive

00:00:34

 
  Deploy
passed #285911
respdiff
obs:trigger

00:00:13

 
  Deploy Test
canceled #285912
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obs:build:all

06:23:28

passed #285913
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obs:centos7:x86_64

00:28:42

passed #285914
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obs:debian9:x86_64

00:36:38

passed #285915
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obs:fedora29:x86_64

00:47:43

passed #285916
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obs:fedora30:x86_64

00:59:50

passed #285917
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obs:leap15:x86_64

00:35:22

passed #285918
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obs:ubuntu1604:x86_64

00:35:16

passed #285919
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obs:ubuntu1804:x86_64

00:46:05

passed #285920
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obs:ubuntu1904:x86_64

00:36:08