[YUNIKORN-2090] Fix typo in yunikorn-scheduler-interface (#109)

Closes: #109

Signed-off-by: PoAn Yang <payang@apache.org>
diff --git a/lib/go/si/si.pb.go b/lib/go/si/si.pb.go
index c633ce6..2d39171 100644
--- a/lib/go/si/si.pb.go
+++ b/lib/go/si/si.pb.go
@@ -1413,7 +1413,7 @@
 	// Allocation key is used by both of scheduler and RM to track allocations.
 	// It doesn't have to be same as RM's internal allocation id (such as Pod name of K8s or ContainerID of YARN).
 	// Allocations from the same AllocationAsk which are returned to the RM at the same time will have the same allocationKey.
-	// The request is considered an update of the existing AllocationAsk if an ALlocationAsk with the same allocationKey
+	// The request is considered an update of the existing AllocationAsk if an AllocationAsk with the same allocationKey
 	// already exists.
 	AllocationKey string `protobuf:"bytes,1,opt,name=allocationKey,proto3" json:"allocationKey,omitempty"`
 	// The application ID this allocation ask belongs to
diff --git a/scheduler-interface-spec.md b/scheduler-interface-spec.md
index b72cdeb..6662b5c 100644
--- a/scheduler-interface-spec.md
+++ b/scheduler-interface-spec.md
@@ -416,7 +416,7 @@
   // Allocation key is used by both of scheduler and RM to track allocations.
   // It doesn't have to be same as RM's internal allocation id (such as Pod name of K8s or ContainerID of YARN).
   // Allocations from the same AllocationAsk which are returned to the RM at the same time will have the same allocationKey.
-  // The request is considered an update of the existing AllocationAsk if an ALlocationAsk with the same allocationKey
+  // The request is considered an update of the existing AllocationAsk if an AllocationAsk with the same allocationKey
   // already exists.
   string allocationKey = 1;
   // The application ID this allocation ask belongs to
diff --git a/si.proto b/si.proto
index 0edb0a0..94b2296 100644
--- a/si.proto
+++ b/si.proto
@@ -193,7 +193,7 @@
   // Allocation key is used by both of scheduler and RM to track allocations.
   // It doesn't have to be same as RM's internal allocation id (such as Pod name of K8s or ContainerID of YARN).
   // Allocations from the same AllocationAsk which are returned to the RM at the same time will have the same allocationKey.
-  // The request is considered an update of the existing AllocationAsk if an ALlocationAsk with the same allocationKey
+  // The request is considered an update of the existing AllocationAsk if an AllocationAsk with the same allocationKey
   // already exists.
   string allocationKey = 1;
   // The application ID this allocation ask belongs to