Fix sed syntax and macOS bundle names with spaces

[mrclary]

Checklist

• [x] Used a personal fork of the feedstock to propose changes
• [ ] Bumped the build number (if the version is unchanged)
• [ ] Reset the build number to 0 (if the version changed)
• [ ] Re-rendered with the latest conda-smithy (Use the phrase code>@<space/conda-forge-admin, please rerender in a comment in this PR for automated rerendering)
• [ ] Ensured the license file is being packaged.

Yet another fix:

• Fix issue with sed syntax
• Fix command quotes to accommodate bundle names with spaces for macOS

[conda-forge-webservices[bot]]

Hi! This is the friendly automated conda-forge-linting service.

I just wanted to let you know that I linted all conda-recipes in your PR (recipe) and found it was in an excellent condition.

[ccordoba12]

@mrclary, is this ready to be merged?

[mrclary]

@mrclary, is this ready to be merged?

Yes.