[llvm-c][documentation] fix typo in LLVMSizeOfTypeInBits (llvm#100839)

`LLVMSizeOfTypeInBits`:
- `Computes the size of a type in bytes for a target` -> `Computes the
size of a type in bits for a target`

Author: wr7

llvm/include/llvm-c/Target.h

@@ -244,7 +244,7 @@ LLVMTypeRef LLVMIntPtrTypeInContext(LLVMContextRef C, LLVMTargetDataRef TD);
 LLVMTypeRef LLVMIntPtrTypeForASInContext(LLVMContextRef C, LLVMTargetDataRef TD,
                                          unsigned AS);
 
-/** Computes the size of a type in bytes for a target.
+/** Computes the size of a type in bits for a target.
     See the method llvm::DataLayout::getTypeSizeInBits. */
 unsigned long long LLVMSizeOfTypeInBits(LLVMTargetDataRef TD, LLVMTypeRef Ty);