Fix Syntax Error with MermaidRenderer

[Lehmann-Fabian]

When I create an HTML of the DAG using the MermaidRenderer, I get a Syntax Error when opening the file.
Quoting the names solves this.

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[bentsherman]

Thanks Fabian. Which version did this happen for you? Trying to determine if it was a regression

[Lehmann-Fabian]

I think it cannot cause an error with Nextflow as it is because Tasknames and Operators don't contain spaces.
However, I faced the problem when I reused the DAG renders of Nextflow for my nf-datatrail plugin.
I defined the physical tasks as processes, e.g., TASKNAME (1). In this case, you get a Syntax error. I can send you an example via Mail.
Quoting the name fixes it.

Therefore, I suggest to accept my changes to make it:

1. More stable better and better reusable
2. Generating a consistent output file. For ORIGINS and NODES, you have already quoted the labels.

[bentsherman]

Please allow me to update the branch or update it yourself so that I can merge it.

Keep in mind that every time another PR is merged to master, this PR has to be updated again. Because of our time difference we could get caught in an infinite loop. This is why it's easier to give me push access so that I can update the branch myself

[Lehmann-Fabian]

Please go ahead.