[Docs] Replace rst style double-backtick with md single-backtick (#27091)

Signed-off-by: Harry Mellor <19981378+hmellor@users.noreply.github.com>

vllm/platforms/rocm.py

@@ -75,7 +75,7 @@ _ROCM_DEVICE_ID_NAME_MAP: dict[str, str] = {
     "0x74bd": "AMD_Instinct_MI300X_HF",
 }
 
-# Prevent use of clashing `{CUDA/HIP}_VISIBLE_DEVICES``
+# Prevent use of clashing `{CUDA/HIP}_VISIBLE_DEVICES`
 if "HIP_VISIBLE_DEVICES" in os.environ:
     val = os.environ["HIP_VISIBLE_DEVICES"]
     if cuda_val := os.environ.get("CUDA_VISIBLE_DEVICES", None):

vllm/platforms/xpu.py

@@ -168,7 +168,7 @@ class XPUPlatform(Platform):
                 parallel_config.distributed_executor_backend = "uni"
         elif parallel_config.distributed_executor_backend == "mp":
             # FIXME(kunshang):
-            # spawn needs calling `if __name__ == '__main__':``
+            # spawn needs calling `if __name__ == '__main__':`
             # fork is not supported for xpu start new process.
             if envs.VLLM_WORKER_MULTIPROC_METHOD != "spawn":
                 os.environ["VLLM_WORKER_MULTIPROC_METHOD"] = "spawn"