Page title for credit memo and shipment

[luigifab]

Description

This useless PR set title for two pages:

• #100000004 / Invoices / Sales / OpenMage Admin (no change)
• View Memo / Credit Memos / Sales / OpenMage Admin => #100000003 / Credit Memos / Sales / OpenMage Admin
• View Shipment / Shipments / Sales / OpenMage Admin => #100000004 / Shipments / Sales / OpenMage Admin

OpenMage 20.0.6 / PHP 8.0.1

Manual testing scenarios

Go to Sales / Order, open an order, create an invoice, a shipment, a credit memo, and open them in a new tab.

Contribution checklist

• Pull request has a meaningful description of its purpose
• All commits are accompanied by meaningful commit messages
• All automated tests passed successfully (all builds are green)

[github-actions]

Unit Test Results

1 files  ±0  1 suites  ±0   0s ⏱️ ±0s
0 tests ±0  0 ✔️ ±0  0 💤 ±0  0 ❌ ±0 
6 runs  +4  4 ✔️ +2  2 💤 +2  0 ❌ ±0 

Results for commit 76e8fe3. ± Comparison against base commit bbd05be.