Fix spelling error. NFC

[kerbowa]

Summary

Test commit.

llvm/lib/Target/AMDGPU/GCNSchedStrategy.h

class GCNScheduleDAGMILive : public ScheduleDAGMILive {
   unsigned MinOccupancy;
 
   // Scheduling stage number.
   unsigned Stage;
 
   // Current region index.
   size_t RegionIdx;
 
-  // Vecor of regions recorder for later rescheduling
+  // Vector of regions recorder for later rescheduling
   SmallVector<std::pair<MachineBasicBlock::iterator,
                         MachineBasicBlock::iterator>, 32> Regions;
 
   // Region live-in cache.
   SmallVector<GCNRPTracker::LiveRegSet, 32> LiveIns;
 
   // Region pressure cache.
   SmallVector<GCNRegPressure, 32> Pressure;