Update doc-builder to v3.2

[samsrabin]

Description of changes

All table captions are now:

• Left-aligned,
• Sticky (i.e., they don't move as you scroll horizontally in the table), and
• Limited to the size of the content column.

Before:

After:

Specific notes

Contributors other than yourself, if any:

• Claude Opus 4.8

CTSM issues resolved or otherwise addressed, if any:

• None

Any user interface changes (namelist or namelist defaults changes)? No

Testing planned or performed, if any:

• Local builds
• PR build tests

Requirements before merge:

• I have followed the CTSM contribution guidelines.