[FIX] mrp: shop floor overview paragraph fixes

[fw-bot]

What this PR does and why it's needed

Fixes a couple of sentence issues in the Shop Floor overview page, flagged in reviewer feedback, and tidies up a few line-length issues encountered along the way.

Changes

Manufacturing — Shop Floor overview

• Reworded the Close Production and Mark as Done button descriptions from "Clicking X does Y" to imperative "Click X to Y" phrasing, and removed a duplicated line left over from the previous wording.
• Rejoined a couple of lines that were wrapped before the line-length limit was needed (Navigation section and Operator panel section).

---

This 19.0 PR can be FWP up to master.

Forward-Port-Of: #20081

[robodoo]

[fw-bot]

@erjer-odoo @Felicious cherrypicking of pull request #20081 failed.

stdout:

Auto-merging content/applications/inventory_and_mrp/manufacturing/shop_floor/shop_floor_overview.rst
CONFLICT (content): Merge conflict in content/applications/inventory_and_mrp/manufacturing/shop_floor/shop_floor_overview.rst

Either perform the forward-port manually (and push to this branch, proceeding as usual) or close this PR (maybe?).

you can use git-fw to re-do the forward-port for you locally.

⚠️ after resolving this conflict, you will need to merge it via @robodoo.

More info at https://github.com/odoo/odoo/wiki/Mergebot#forward-port