patch 8.2.4928: various white space and cosmetic mistakes

Problem:    Various white space and cosmetic mistakes.
Solution:   Change spaces to tabs, improve comments.
diff --git a/src/term.c b/src/term.c
index f34b642..ef3cf94 100644
--- a/src/term.c
+++ b/src/term.c
@@ -688,7 +688,7 @@
     {K_K8,		"\316\372"},
     {K_K9,		"\316\376"},
     {K_BS,		"\316x"},
-    {K_S_BS,            "\316y"},
+    {K_S_BS,		"\316y"},
 # endif
 
 # if defined(VMS) || defined(ALL_BUILTIN_TCAPS)