Fixed spelling in single-line comments.
diff --git a/src/os/win32/ngx_service.c b/src/os/win32/ngx_service.c
index d8b41a9..5bed9a7 100644
--- a/src/os/win32/ngx_service.c
+++ b/src/os/win32/ngx_service.c
@@ -20,7 +20,7 @@
 {
     /* primary thread */
 
-    /* StartServiceCtrlDispatcher() shouxpdl be called within 30 seconds */
+    /* StartServiceCtrlDispatcher() should be called within 30 seconds */
 
     if (StartServiceCtrlDispatcher(st) == 0) {
         ngx_log_error(NGX_LOG_EMERG, log, ngx_errno,