Update S4 point of contact in docs (NOAA-EMC#2660)

Update the point of contact for global workflow issues on S4.

docs/source/hpc.rst

@@ -22,7 +22,7 @@ HPC helpdesks
 * Hercules:  [email protected]
 * HPSS: [email protected]
 * Gaea: [email protected]
-* S4: david.huber@noaa.gov
+* S4: innocent.souopgui@noaa.gov
 * Jet: [email protected]
 * Cloud: [email protected]
 
@@ -48,7 +48,7 @@ https://aim.rdhpcs.noaa.gov/
 Optimizing the global workflow on S4
 ====================================
 
-The S4 cluster is relatively small and so optimizations are recommended to improve cycled runtimes. Please contact David Huber (david.huber@noaa.gov) if you are planning on running a cycled experiment on this system to obtain optimized configuration files.
+The S4 cluster is relatively small and so optimizations are recommended to improve cycled runtimes. Please contact Innocent Souopgui (innocent.souopgui@noaa.gov) if you are planning on running a cycled experiment on this system to obtain optimized configuration files.
 
 ============
 Git settings

docs/source/init.rst

@@ -315,7 +315,7 @@ Manual Generation
 *****************
 
 .. note::
-   Initial conditions cannot be generated on S4. These must be generated on another supported platform then pushed to S4. If you do not have access to a supported system or need assistance, please contact David Huber (david.huber@noaa.gov).
+   Initial conditions cannot be generated on S4. These must be generated on another supported platform then pushed to S4. If you do not have access to a supported system or need assistance, please contact Innocent Souopgui (innocent.souopgui@noaa.gov).
 
 .. _coldstarts: