loader: spell 'separator' correctly

PATH_SEPERATOR -> PATH_SEPARATOR
diff --git a/loader/vk_loader_platform.h b/loader/vk_loader_platform.h
index 0ffc923..0898b1e 100644
--- a/loader/vk_loader_platform.h
+++ b/loader/vk_loader_platform.h
@@ -47,7 +47,7 @@
 #include <libgen.h>
 
 // VK Library Filenames, Paths, etc.:
-#define PATH_SEPERATOR ':'
+#define PATH_SEPARATOR ':'
 #define DIRECTORY_SYMBOL '/'
 
 #define VULKAN_DIR            "/vulkan/"
@@ -236,7 +236,7 @@
 #endif // __cplusplus
 
 // VK Library Filenames, Paths, etc.:
-#define PATH_SEPERATOR ';'
+#define PATH_SEPARATOR ';'
 #define DIRECTORY_SYMBOL '\\'
 #define DEFAULT_VK_REGISTRY_HIVE HKEY_LOCAL_MACHINE
 #define DEFAULT_VK_DRIVERS_INFO "SOFTWARE\\Khronos\\" API_NAME "\\Drivers"