Issue Summary

When you have a legacy confluence page that has an anchor link macro present, if the anchor link has a space in the name, on page migration the link will be broken (show a broken link icon)

Steps to Reproduce

1. Create a legacy confluence page
2. Create an anchor link macro and give it a name that contains a space
3. Convert the page to modern confluence page

Expected Results

Expect the anchor link to continue to work correctly

Actual Results

The link gets broken and coping and pasting the link will be incorrect. (spaces should get replaced with '-')

Workaround

Make a change to the name value and the underlying link will get updated correctly. For example backspace the last character and re-add it (saves on change)