DOC: quvi-get(1): Revise the output-regex description
DOC: quvi-get(1): Revise the output-regex description

Other:
* Use the exec anchor throughout the document

Signed-off-by: Toni Gundogdu <eac2284b3c43676907b96f08de9d3d52d5df0361@gmail.com>

legatvs/quvi-tool,legatvs/quvi-tool,legatvs/quvi-tool