patch 8.2.3160: 'breakindent' does not work well for bulleted lists

Problem:    'breakindent' does not work well for bulleted and numbered lists.
Solution:   Add the "list" entry to 'breakindentopt'. (Christian Brabandt,
            closes #8564, closes #1661)
diff --git a/runtime/doc/options.txt b/runtime/doc/options.txt
index af2e23e..aaac094 100644
--- a/runtime/doc/options.txt
+++ b/runtime/doc/options.txt
@@ -1326,7 +1326,10 @@
 			    continuation (positive).
 		sbr	    Display the 'showbreak' value before applying the
 			    additional indent.
-	The default value for min is 20 and shift is 0.
+		list:{n}    Adds an additional indent for lines that match a 
+			    numbered or bulleted list (using the
+			    'formatlistpat' setting).
+	The default value for min is 20, shift and list is 0.
 
 						*'browsedir'* *'bsdir'*
 'browsedir' 'bsdir'	string	(default: "last")