Fix broken PR links in 0.106.1 release notes (#2000)

Author: ItsHarper

blog/2025-07-30-nushell_0_106_1.md

@@ -67,8 +67,8 @@ When building plugins with our Rust `nu-plugin-core 0.106.0` crate you may have
 [@Bahex]: https://github.com/Bahex
 [@cptpiepmatz]: https://github.com/cptpiepmatz
 [@sholderbach]: https://github.com/sholderbach
-[#16235]: https://github.com/nushell/nushell/pulls/16235
-[#16266]: https://github.com/nushell/nushell/pulls/16266
-[#16268]: https://github.com/nushell/nushell/pulls/16268
-[#16275]: https://github.com/nushell/nushell/pulls/16275
-[#16279]: https://github.com/nushell/nushell/pulls/16279
+[#16235]: https://github.com/nushell/nushell/pull/16235
+[#16266]: https://github.com/nushell/nushell/pull/16266
+[#16268]: https://github.com/nushell/nushell/pull/16268
+[#16275]: https://github.com/nushell/nushell/pull/16275
+[#16279]: https://github.com/nushell/nushell/pull/16279