Fix a psc.edu link that was moved, closes #2354

Author: michaelklishin

docs/networking.md

@@ -1187,7 +1187,7 @@ for more details.
 
 TCP stack tuning is a broad topic that is covered in much detail elsewhere:
 
- * [Enabling High Performance Data Transfers](https://psc.edu/index.php/services/networking/68-research/networking/641-tcp-tune)
+ * [Enabling High Performance Data Transfers](https://www.psc.edu/research/networking/tcp-tune/)
  * [Network Tuning Guide](https://fasterdata.es.net/network-tuning/)
 
 

versioned_docs/version-3.13/networking.md

@@ -1123,7 +1123,7 @@ for more details.
 
 TCP stack tuning is a broad topic that is covered in much detail elsewhere:
 
- * [Enabling High Performance Data Transfers](https://psc.edu/index.php/services/networking/68-research/networking/641-tcp-tune)
+ * [Enabling High Performance Data Transfers](https://www.psc.edu/research/networking/tcp-tune/)
  * [Network Tuning Guide](https://fasterdata.es.net/network-tuning/)
 
 

versioned_docs/version-4.0/networking.md

@@ -1141,7 +1141,7 @@ for more details.
 
 TCP stack tuning is a broad topic that is covered in much detail elsewhere:
 
- * [Enabling High Performance Data Transfers](https://psc.edu/index.php/services/networking/68-research/networking/641-tcp-tune)
+ * [Enabling High Performance Data Transfers](https://www.psc.edu/research/networking/tcp-tune/)
  * [Network Tuning Guide](https://fasterdata.es.net/network-tuning/)
 
 

versioned_docs/version-4.1/networking.md

@@ -1188,7 +1188,7 @@ for more details.
 
 TCP stack tuning is a broad topic that is covered in much detail elsewhere:
 
- * [Enabling High Performance Data Transfers](https://psc.edu/index.php/services/networking/68-research/networking/641-tcp-tune)
+ * [Enabling High Performance Data Transfers](https://www.psc.edu/research/networking/tcp-tune/)
  * [Network Tuning Guide](https://fasterdata.es.net/network-tuning/)