runtime(doc): fix typo in :h credits section

Signed-off-by: Christian Brabandt <[email protected]>

Author: chrisbra

runtime/doc/intro.txt

@@ -1,4 +1,4 @@
-*intro.txt*     For Vim version 9.1.  Last change: 2025 Oct 04
+*intro.txt*     For Vim version 9.1.  Last change: 2025 Oct 05
 
 
 		  VIM REFERENCE MANUAL    by Bram Moolenaar
@@ -200,7 +200,8 @@ patches, suggestions and giving feedback about what is good and bad in Vim.
 
 Vim would never have become what it is now, without the help of these people!
 
-	|Bram| Moolenaar	Creator and benevolent dictor for life
+	|Bram| Moolenaar	Creator and benevolent dictator until his
+				passing (3 August 2023)
 	Ron Aaron		Win32 GUI changes
 	Mohsin Ahmed		encryption
 	Zoltan Arpadffy		work on VMS port