Merge bitcoin/bitcoin#28576: docs: fix typo in packages.md

bdee858 typo: in packages.md (Erik McKelvey)

Pull request description:

  Removed extra word `the` in packages.md

ACKs for top commit:
  fanquake:
    ACK bdee858

Tree-SHA512: 14a745e5f8ad97f38c21c7b80e88592f84f50d87bc71930c1212fb9ba5a46b129ffec0aa1dd53780f872c0067b58bd2a65ed9def4d9f5f50dc8c7d8e34a429d4

Author: fanquake

doc/policy/packages.md

@@ -28,7 +28,7 @@ The following rules are enforced for all packages:
    - Note that, if these mempool limits change, package limits should be reconsidered. Users may
      also configure their mempool limits differently.
 
-   - Note that the this is transaction weight, not "virtual" size as with other limits to allow
+   - Note that this is transaction weight, not "virtual" size as with other limits to allow
      simpler context-less checks.
 
 * Packages must be topologically sorted. (#20833)