fix(results): copy table copies screenshot links

[soyacz]

Having screenshots in the table, copy table button does not copy it but just adds 'view' text.

Now this is fixed and copy table button copies link in markdown format for proper reference.

fixes: https://github.com/scylladb/argus/issues/450

[soyacz]

Example:		P90 read [ms]	P99 read [ms]	Throughput read [op/s]	duration [HH:MM:SS]	Overview	QA dashboard
Cycle #​1	$${\color{red}5.01}$$	$${\color{green}9.54}$$	41,240	$${\color{green}00:29:44}$$	view	view