Apply suggestions from thomas review

Co-authored-by: theRealThagomizer <96515928+theRealThagomizer@users.noreply.github.com>

Author: jero-odoo

content/applications/sales/sales/invoicing/milestone.rst

@@ -8,7 +8,7 @@ Invoice project milestones
 Invoicing based on project milestones allows companies to bill large or long-running projects
 progressively as key deliverables are completed. Each milestone represents a measurable stage of
 work that triggers invoicing upon completion. This approach helps maintain predictable cash flow and
-proves customers visibility into project progress, while allowing payments to occur in manageable
+provides customers with visibility into project progress, all while allowing payments to occur in manageable
 installments.
 
 In Odoo, milestone invoicing is configured at the product level in the **Sales** app, with milestone
@@ -60,7 +60,7 @@ the smart button to view, edit, or create new milestones.
 .. image:: milestone/view-milestones.png
    :alt: The milestones for a sales order line.
 
-From here, the :guilabel:`Delivered %` can be altered. This amount equatesto the total cost of the
+From here, the :guilabel:`Delivered %` can be altered. This amount equates to the total cost of the
 |SO| that is billed when the milestone is reached.
 
 .. example::