Updated documentation for Convertigo 8.4.4

[nicolas-albert]

Sync the Convertigo documentation with the 8.4.4 release.

[yosifkit]

Previous comments on #2675 apply here as well:

#2675 (review):

I'd recommend not removing the $ at the beginning of command lines in a console code block, since that lets the syntax highlighter know that the line should be highlighted like a command and not the output of a command (with the line-end backslashes letting it know to continue the command syntax).

#2675 (review)

There are a few instances like this one where an en dash is sneaking in where it does not make sense, like a command line (and one where it already has on L284/R381). Plus, this is incorrectly replacing a --name with -name even if the dash was the correct dash (-) and not en dash (–).