diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
index c766d71d51..b157277519 100644
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -33,13 +33,13 @@ terms.  To sign off a commit, simply use the -s flag when committing:
 
 ```sh
 git commit -s
-```  
+```
 
 This ensures that every contribution is properly documented and traceable,
 aligning with industry standards used in projects like the Linux Kernel or
 the git project.  By making Signed-off commits a standard practice, we help
 maintain a legally compliant and well-governed codebase while fostering trust
-within our contributor community. 
+within our contributor community.
 
 When merging PRs into Vim, the current maintainer @chrisbra usually adds missing
 `Signed-off-by` trailers for the author user name and email address as well for
@@ -71,7 +71,7 @@ Or open [the todo file][todo list] on GitHub to see the latest version.
 # Syntax, indent and other runtime files
 
 The latest version of these files can be obtained from the repository.
-They are usually not updated with numbered patches. However, they may 
+They are usually not updated with numbered patches. However, they may
 or may not work with older Vim releases (since they may contain new features).
 
 If you find a problem with one of these files or have a suggestion for
diff --git a/runtime/doc/builtin.txt b/runtime/doc/builtin.txt
index 4ad6b3d7d2..b69f6b4631 100644
--- a/runtime/doc/builtin.txt
+++ b/runtime/doc/builtin.txt
@@ -8158,7 +8158,7 @@ printf({fmt}, {expr1} ...)				*printf()*
 <		      1.41
 
 		You will get an overflow error |E1510|, when the field-width
-		or precision will result in a string longer than 1 MB
+		or precision will result in a string longer than 1 MiB
 		(1024*1024 = 1048576) chars.
 
 							*E1500*
diff --git a/runtime/doc/version9.txt b/runtime/doc/version9.txt
index 4fb3227086..527ed18502 100644
--- a/runtime/doc/version9.txt
+++ b/runtime/doc/version9.txt
@@ -41637,8 +41637,8 @@ Options: ~
 - use 'smoothscroll' logic for CTRL-F / CTRL-B for pagewise scrolling
   and CTRL-D / CTRL-U for half-pagewise scrolling
 - New option value for 'fillchars':
-  	"trunc"		- configure truncation indicator, 'pummaxwidth'
-  	"truncrl"	- like "trunc" but in 'rl' mode, 'pummaxwidth'
+	"trunc"		- configure truncation indicator, 'pummaxwidth'
+	"truncrl"	- like "trunc" but in 'rl' mode, 'pummaxwidth'
 
 Ex commands: ~
 - allow to specify a priority when defining a new sign |:sign-define|
diff --git a/runtime/doc/vim9.txt b/runtime/doc/vim9.txt
index 54fb8f333e..ba72358d13 100644
--- a/runtime/doc/vim9.txt
+++ b/runtime/doc/vim9.txt
@@ -1,4 +1,4 @@
-*vim9.txt*	For Vim version 9.1.  Last change: 2025 Apr 03
+*vim9.txt*	For Vim version 9.1.  Last change: 2025 Apr 18
 
 
 		  VIM REFERENCE MANUAL	  by Bram Moolenaar
@@ -1493,11 +1493,11 @@ tuple<number>			a tuple with a single item of type |Number|
 tuple<number, string>		a tuple with two items of type |Number| and
 				|String|
 tuple<number, float, bool>	a tuple with three items of type |Number|,
-				|Float| and |Boolean|.
+				|Float| and |Boolean|
 tuple<...list<number>>		a variadic tuple with zero or more items of
-				type |Number|.
+				type |Number|
 tuple<number, ...list<string>>	a tuple with an item of type |Number| followed
-				by zero or more items of type |String|.
+				by zero or more items of type |String|
 
 Examples: >
     var myTuple: tuple<number> = (20,)