docs(gpu): reformat Azure instance name

Author: dsloanm

explanation/gpus/slurmconf.md

@@ -13,7 +13,7 @@ Each GPU-equipped node is added to the `gres.conf` configuration file as its own
 
 In `slurm.conf`, the configuration for GPU-equipped nodes has a comma-separated list in its `Gres=` element, giving the name, type and count for each GPU on the node.
 
-For example, a Microsoft Azure Standard_NC24ads_A100_v4 node, equipped with a NVIDIA A100 PCIe GPU, is given a node configuration in `slurm.conf` of:
+For example, a Microsoft Azure `Standard_NC24ads_A100_v4` node, equipped with a NVIDIA A100 PCIe GPU, is given a node configuration in `slurm.conf` of:
 
 ```
 NodeName=juju-e33208-1 CPUs=24 Boards=1 SocketsPerBoard=1 CoresPerSocket=24 ThreadsPerCore=1 RealMemory=221446 Gres=gpu:nvidia_a100_80gb_pcie:1 MemSpecLimit=1024