patch 8.1.0096: inconsistent use of the word autocommands

Problem:    Inconsistent use of the word autocommands.
Solution:   Don't use auto-commands or "auto commands".
diff --git a/src/fileio.c b/src/fileio.c
index 428e408..0c56a1e 100644
--- a/src/fileio.c
+++ b/src/fileio.c
@@ -8412,19 +8412,19 @@
  *				    will be automatically executed for <event>
  *				    when editing a file matching <pat>, in
  *				    the current group.
- * :autocmd <event> <pat>	    Show the auto-commands associated with
+ * :autocmd <event> <pat>	    Show the autocommands associated with
  *				    <event> and <pat>.
- * :autocmd <event>		    Show the auto-commands associated with
+ * :autocmd <event>		    Show the autocommands associated with
  *				    <event>.
- * :autocmd			    Show all auto-commands.
- * :autocmd! <event> <pat> <cmd>    Remove all auto-commands associated with
+ * :autocmd			    Show all autocommands.
+ * :autocmd! <event> <pat> <cmd>    Remove all autocommands associated with
  *				    <event> and <pat>, and add the command
  *				    <cmd>, for the current group.
- * :autocmd! <event> <pat>	    Remove all auto-commands associated with
+ * :autocmd! <event> <pat>	    Remove all autocommands associated with
  *				    <event> and <pat> for the current group.
- * :autocmd! <event>		    Remove all auto-commands associated with
+ * :autocmd! <event>		    Remove all autocommands associated with
  *				    <event> for the current group.
- * :autocmd!			    Remove ALL auto-commands for the current
+ * :autocmd!			    Remove ALL autocommands for the current
  *				    group.
  *
  *  Multiple events and patterns may be given separated by commas.  Here are
@@ -8534,7 +8534,7 @@
     if (!forceit && *cmd == NUL)
     {
 	/* Highlight title */
-	MSG_PUTS_TITLE(_("\n--- Auto-Commands ---"));
+	MSG_PUTS_TITLE(_("\n--- Autocommands ---"));
     }
 
     /*
@@ -9602,7 +9602,7 @@
     autocmd_match = fname;
 
 
-    /* Don't redraw while doing auto commands. */
+    /* Don't redraw while doing autocommands. */
     ++RedrawingDisabled;
     save_sourcing_name = sourcing_name;
     sourcing_name = NULL;	/* don't free this one */
@@ -9855,7 +9855,7 @@
 		    : ap->buflocal_nr == apc->arg_bufnr)
 	    {
 		name = event_nr2name(apc->event);
-		s = _("%s Auto commands for \"%s\"");
+		s = _("%s Autocommands for \"%s\"");
 		sourcing_name = alloc((unsigned)(STRLEN(s)
 					    + STRLEN(name) + ap->patlen + 1));
 		if (sourcing_name != NULL)