feat: reload key

doc/denote.txt

@@ -8,6 +8,7 @@ CONTENTS						*vim-denote* *denote*
 1. Introduction		|denote-intro|
 2. Commands		|denote-commands|
 3. Settings		|denote-settings|
+4. Keys			|denote-keys|
 
 ==============================================================================
 								*denote-intro*
@@ -143,4 +144,11 @@ generator and to specify, e.g.,
 <
 
 
+								*denote-keys*
+Keys ~
+						*denote-r*
+r	Reload the location list showing denote entries or denote grep matches
+	found. This key is only active in location lists generated by the
+	present package.
+
 vim:tw=78:sw=4:ts=8:noet:ft=help:norl: