patch 8.0.0466: still macros that should be all-caps

Problem:    There are still a few macros that should be all-caps.
Solution:   Make a few more macros all-caps.
diff --git a/src/farsi.c b/src/farsi.c
index cc414d6..bac1510 100644
--- a/src/farsi.c
+++ b/src/farsi.c
@@ -1719,7 +1719,7 @@
 
     /* Assume the screen has been messed up: clear it and redraw. */
     redraw_later(CLEAR);
-    MSG_ATTR(farsi_text_1, hl_attr(HLF_S));
+    MSG_ATTR(farsi_text_1, HL_ATTR(HLF_S));
 }
 
 /*
@@ -1747,7 +1747,7 @@
 
     /* Assume the screen has been messed up: clear it and redraw. */
     redraw_later(CLEAR);
-    MSG_ATTR(farsi_text_2, hl_attr(HLF_S));
+    MSG_ATTR(farsi_text_2, HL_ATTR(HLF_S));
 }
 
 /*