Proposed changes

Fix some broken anchors in the tedge-p11-server reference guide which linked back to the HSM doc page.

Note: Using explicit anchor tags for section which are referenced on another page is preferred otherwise if the title is changed, then the reference also breaks.

In addition, some trailing whitespace was also removed from the HSM page, and a reference to thin-edge was replaced with the %%te%% variable.

The broken anchors were detected when building the tedge-docs locally:

Exhaustive list of all broken anchors found:
- Broken anchor on source page path = /thin-edge.io/next/references/tedge-p11-server/:
   -> linking to /thin-edge.io/next/references/hsm-support/#part-2-thin-edge-setup
- Broken anchor on source page path = /thin-edge.io/references/tedge-p11-server/:
   -> linking to /thin-edge.io/references/hsm-support/#part-2-thin-edge-setup

Types of changes

• Bugfix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Improvement (general improvements like code refactoring that doesn't explicitly fix a bug or add any new functionality)
• Documentation Update (if none of the other choices apply)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)

Paste Link to the issue

Checklist

• I have read the CONTRIBUTING doc
• I have signed the CLA (in all commits with git commit -s. You can activate automatic signing by running just prepare-dev once)
• I ran just format as mentioned in CODING_GUIDELINES
• I used just check as mentioned in CODING_GUIDELINES
• I have added tests that prove my fix is effective or that my feature works
• I have added necessary documentation (if appropriate)

Further comments