Incorrect sentence case for "Order Shipments"

Commerce Shipping uses "Order Shipments" when it should be "Order shipments". For reference, the User Interface Standards say: Page titles, links (in menus, too), and headings in Drupal should generally use sentence case capitalization, where only the first word is capitalized, except for proper nouns and other words that are generally capitalized by a more specific rule. Examples of sentence case capitalization include the following: "Block administration", "List menus", "Install new theme".

Theoretically, the affected view machine name "order_shipments" should also be renamed to "commerce_order_shipments" (to match the rest of Commerce core), but that's a substantially thicker issue than just the sentence case string change that this issue is patching.