Correct spelling on semaphore (#422)

Signed-off-by: Russell McGuire <russell.w.mcguire@intel.com>

Author: rwmcguir

scripts/core/externalSemaphores.yml

@@ -196,7 +196,7 @@ params:
     - type: "$x_external_semaphore_signal_params_ext_t*"
       name: "signalParams"
       desc: |
-            [in][range(0, numSemaphores)] The array of pointers to external semepahore signal parameters.
+            [in][range(0, numSemaphores)] The array of pointers to external semaphore signal parameters.
     - type: $x_event_handle_t
       name: hSignalEvent
       desc: "[in][optional] handle of the event to signal on completion"
@@ -241,7 +241,7 @@ params:
     - type: "$x_external_semaphore_wait_params_ext_t*"
       name: "waitParams"
       desc: |
-            [in][range(0,numSemaphores)] The array of pointers to external semepahore wait parameters.
+            [in][range(0,numSemaphores)] The array of pointers to external semaphore wait parameters.
     - type: $x_event_handle_t
       name: hSignalEvent
       desc: "[in][optional] handle of the event to signal on completion"