Document the prefix commands for capture

* doc/org.texi (Using capture): Document the prefix commands for capture.

doc/org.texi

@@ -6160,6 +6160,7 @@ children, first move the cursor back to the parent.
 
 @orgcmd{C-c C-k,org-capture-kill}
 Abort the capture process and return to the previous state.
+
 @end table
 
 You can also call @code{org-capture} in a special way from the agenda, using
@@ -6167,6 +6168,17 @@ the @kbd{k c} key combination.  With this access, any timestamps inserted by
 the selected capture template will default to the cursor date in the agenda,
 rather than to the current date.
 
+To find the locations of the last stored capture, use @code{org-capture} with
+prefix commands:
+
+@table @kbd
+@orgkey{C-u C-c c}
+Visit the target location of a cpature template.  You get to select the
+template in the usual way.
+@orgkey{C-u C-u C-c c}
+Visit the last stored capture item in its buffer.
+@end table
+
 @node Capture templates,  , Using capture, Capture
 @subsection Capture templates
 @cindex templates, for Capture
@@ -7986,7 +7998,6 @@ s  @r{Schedule all items to a new date.  To shift existing schedule dates}
    @r{at the prompt, for example @samp{++8d} or @samp{++2w}.}
 S  @r{Reschedule randomly by N days.  N will be prompted for.  With prefix}
    @r{arg (@kbd{C-u B S}), scatter only accross weekdays.}
-}
 d  @r{Set deadline to a specific date.}
 @end example