[MCA] Fix typo in comments

[RKSimon]

LGTM - cheers

[Eymay]

Thanks @RKSimon. Can you land this patch for me?
Please use “Eymen Ünay [e-mail]" to commit the change.

llvm/include/llvm/MCA/HardwareUnits/ResourceManager.h

public:
 
   /// Returns true if this is an in-order dispatch/issue resource.
   bool isADispatchHazard() const { return BufferSize == 0; }
   bool isReserved() const { return Unavailable; }
 
   void setReserved() { Unavailable = true; }
   void clearReserved() { Unavailable = false; }
 
-  /// Returs true if this resource is not reserved, and if there are at least
+  /// Returns true if this resource is not reserved, and if there are at least
   /// `NumUnits` available units.
   bool isReady(unsigned NumUnits = 1) const;
 
   bool isAResourceGroup() const { return IsAGroup; }
 
   bool containsResource(uint64_t ID) const { return ResourceMask & ID; }
 
   void markSubResourceAsUsed(uint64_t ID) {

llvm/test/tools/llvm-mca/X86/Haswell/mulx-same-regs.s

 # NOTE: Assertions have been autogenerated by utils/update_mca_test_checks.py
 # RUN: llvm-mca -mtriple=x86_64-unknown-unknown -mcpu=haswell -timeline -iterations=2 < %s | FileCheck %s
 
 # PR51495: If the two destination registers are the same, the destination will
-# contain teh high half of the multiplication result.
+# contain the high half of the multiplication result.
 
 # LLVM-MCA-BEGIN
 mulxl %eax, %eax, %eax
 # LLVM-MCA-END
 
 # LLVM-MCA-BEGIN
 mulxq %rax, %rax, %rax
 # LLVM-MCA-END

llvm/test/tools/llvm-mca/X86/SkylakeClient/mulx-same-regs.s

 # NOTE: Assertions have been autogenerated by utils/update_mca_test_checks.py
 # RUN: llvm-mca -mtriple=x86_64-unknown-unknown -mcpu=skylake -timeline -iterations=2 < %s | FileCheck %s
 
 # PR51495: If the two destination registers are the same, the destination will
-# contain teh high half of the multiplication result.
+# contain the high half of the multiplication result.
 
 # LLVM-MCA-BEGIN
 mulxl %eax, %eax, %eax
 # LLVM-MCA-END
 
 # LLVM-MCA-BEGIN
 mulxq %rax, %rax, %rax
 # LLVM-MCA-END

llvm/test/tools/llvm-mca/X86/Znver3/mulx-same-regs.s

 # NOTE: Assertions have been autogenerated by utils/update_mca_test_checks.py
 # RUN: llvm-mca -mtriple=x86_64-unknown-unknown -mcpu=znver3 -timeline -iterations=2 < %s | FileCheck %s
 
 # PR51495: If the two destination registers are the same, the destination will
-# contain teh high half of the multiplication result.
+# contain the high half of the multiplication result.
 
 # LLVM-MCA-BEGIN
 mulxl %eax, %eax, %eax
 # LLVM-MCA-END
 
 # LLVM-MCA-BEGIN
 mulxq %rax, %rax, %rax
 # LLVM-MCA-END