fixup! Update CHANGELOG for v2021.7.0-preview

Author: andyleejordan

CHANGELOG.md

@@ -6,7 +6,7 @@
 #### [vscode-powershell](https://github.com/PowerShell/vscode-powershell)
 
 - ✨ 👷 [vscode-powershell #3458](https://github.com/PowerShell/vscode-powershell/pull/3458) - Automate more of the release.
-- ✨ 👷 [vscode-powershell #1](https://github.com/PowerShell/vscode-powershell/pull/3439) - Fix `Package` task.
+- ✨ 👷 [vscode-powershell #3439](https://github.com/PowerShell/vscode-powershell/pull/3439) - Fix `Package` task.
 
 #### [PowerShellEditorServices](https://github.com/PowerShell/PowerShellEditorServices)