runtime(doc): update wrong Vietnamese localization tag

Signed-off-by: Christian Brabandt <cb@256bit.org>
diff --git a/runtime/doc/tags b/runtime/doc/tags
index f0ca51b..6b4cd63 100644
--- a/runtime/doc/tags
+++ b/runtime/doc/tags
@@ -11247,7 +11247,7 @@
 vietnamese-ime_diff	vietnamese.txt	/*vietnamese-ime_diff*
 vietnamese-intro	vietnamese.txt	/*vietnamese-intro*
 vietnamese-keymap	vietnamese.txt	/*vietnamese-keymap*
-vietnamese-l18n	vietnamese.txt	/*vietnamese-l18n*
+vietnamese-l10n	vietnamese.txt	/*vietnamese-l10n*
 vietnamese-telex_utf-8	vietnamese.txt	/*vietnamese-telex_utf-8*
 vietnamese-viqr_utf-8	vietnamese.txt	/*vietnamese-viqr_utf-8*
 vietnamese-vni_utf-8	vietnamese.txt	/*vietnamese-vni_utf-8*
diff --git a/runtime/doc/vietnamese.txt b/runtime/doc/vietnamese.txt
index ef0dce2..ff4f464 100644
--- a/runtime/doc/vietnamese.txt
+++ b/runtime/doc/vietnamese.txt
@@ -8,7 +8,7 @@
 
 1. Introduction				  |vietnamese-intro|
 2. Vietnamese keymaps			  |vietnamese-keymap|
-3. Localization				  |vietnamese-l18n|
+3. Localization				  |vietnamese-l10n|
 
 ===============================================================================
 1. Introduction
@@ -17,7 +17,7 @@
 
 - Built-in |vietnamese-keymap|, which allows you to type Vietnamese characters
   in |Insert-mode| and |search-commands| using US keyboard layout.
-- Localization in Vietnamese. See |vietnamese-l18n|
+- Localization in Vietnamese. See |vietnamese-l10n|
 
 ===============================================================================
 2. Vietnamese keymaps
@@ -63,7 +63,7 @@
 
 ===============================================================================
 3. Localization
-							*vietnamese-l18n*
+							*vietnamese-l10n*
 Vim |messages| are also available in Vietnamese.  If you wish to see messages
 in Vietnamese, you can run the command |:language| with an argument being the
 name of the Vietnamese locale.  For example, >