Merge pull request #2316 from h-east/update-diff

Update diff.{txt,jax}

Author: h-east

doc/diff.jax

@@ -1,4 +1,4 @@
-*diff.txt*      For Vim バージョン 9.1.  Last change: 2025 Aug 06
+*diff.txt*      For Vim バージョン 9.1.  Last change: 2025 Sep 15
 
 
 		VIMリファレンスマニュアル    by Bram Moolenaar

en/diff.txt

@@ -1,4 +1,4 @@
-*diff.txt*      For Vim version 9.1.  Last change: 2025 Aug 06
+*diff.txt*      For Vim version 9.1.  Last change: 2025 Sep 15
 
 
 		  VIM REFERENCE MANUAL    by Bram Moolenaar
@@ -351,7 +351,7 @@ hard to see what the actual edit on it was.  You can use diff anchors to pin
 that function so the diff algorithm will align based on it.
 
 To use it, set anchors using 'diffanchors' which is a comma-separated list of
-{address} in each file, and then add "anchor" to 'diffopt'.  Internaly, Vim
+{address} in each file, and then add "anchor" to 'diffopt'.  Internally, Vim
 splits each file up into sections split by the anchors.  It performs the diff
 on each pair of sections separately before merging the results back.