[OpenMP] NFC: Fix trivial typos in comments

Submitted by: kiszk

Differential Revision: https://reviews.llvm.org/D72171
diff --git a/openmp/runtime/src/z_Windows_NT_util.cpp b/openmp/runtime/src/z_Windows_NT_util.cpp
index c149dda..f463ef6 100644
--- a/openmp/runtime/src/z_Windows_NT_util.cpp
+++ b/openmp/runtime/src/z_Windows_NT_util.cpp
@@ -1504,7 +1504,7 @@
 int __kmp_get_load_balance(int max) {
   static ULONG glb_buff_size = 100 * 1024;
 
-  // Saved count of the running threads for the thread balance algortihm
+  // Saved count of the running threads for the thread balance algorithm
   static int glb_running_threads = 0;
   static double glb_call_time = 0; /* Thread balance algorithm call time */