patch 9.1.0329: String interpolation fails for Dict type

Problem:  String interpolation fails for Dict type
Solution: Support Dict data type properly, also support :put =Dict
          (without having to convert it to string() first)
          (Yegappan Lakshmanan)

fixes: #14529
closes: #14541

Signed-off-by: Yegappan Lakshmanan <yegappan@yahoo.com>
Signed-off-by: Christian Brabandt <cb@256bit.org>
diff --git a/runtime/doc/change.txt b/runtime/doc/change.txt
index 7063cad..cd3d6ad 100644
--- a/runtime/doc/change.txt
+++ b/runtime/doc/change.txt
@@ -1,4 +1,4 @@
-*change.txt*    For Vim version 9.1.  Last change: 2023 Dec 19
+*change.txt*    For Vim version 9.1.  Last change: 2024 Apr 14
 
 
 		  VIM REFERENCE MANUAL    by Bram Moolenaar
@@ -1345,8 +1345,8 @@
 The expression must evaluate to a String.  A Number is always automatically
 converted to a String.  For the "p" and ":put" command, if the result is a
 Float it's converted into a String.  If the result is a List each element is
-turned into a String and used as a line.  A Dictionary or FuncRef results in
-an error message (use string() to convert).
+turned into a String and used as a line.  A Dictionary is converted into a
+String.  A FuncRef results in an error message (use string() to convert).
 
 If the "= register is used for the "p" command, the String is split up at <NL>
 characters.  If the String ends in a <NL>, it is regarded as a linewise