runtime(doc): grammar & typo fixes

closes: #13654
diff --git a/runtime/doc/builtin.txt b/runtime/doc/builtin.txt
index 657fe8d..6f05055 100644
--- a/runtime/doc/builtin.txt
+++ b/runtime/doc/builtin.txt
@@ -1,4 +1,4 @@
-*builtin.txt*	For Vim version 9.0.  Last change: 2023 Nov 20
+*builtin.txt*	For Vim version 9.0.  Last change: 2023 Dec 14
 
 
 		  VIM REFERENCE MANUAL	  by Bram Moolenaar
@@ -6688,9 +6688,9 @@
 <		This limits the length of the text used from "line" to
 		"width" bytes.
 
-		If the argument to be formatted is specified using a posional
-		argument specifier, and a '*' is used to indicate that a
-		number argument is to be used to specify the width or
+		If the argument to be formatted is specified using a
+		positional argument specifier, and a '*' is used to indicate
+		that a number argument is to be used to specify the width or
 		precision, the argument(s) to be used must also be specified
 		using a {n$} positional argument specifier. See |printf-$|.
 
diff --git a/runtime/doc/os_vms.txt b/runtime/doc/os_vms.txt
index 175bc7a..e7fa348 100644
--- a/runtime/doc/os_vms.txt
+++ b/runtime/doc/os_vms.txt
@@ -1,4 +1,4 @@
-*os_vms.txt*    For Vim version 9.0.  Last change: 2023 Dec 09
+*os_vms.txt*    For Vim version 9.0.  Last change: 2023 Dec 14
 
 
 		  VIM REFERENCE MANUAL
@@ -771,7 +771,7 @@
 	on X86_64 the CRTL_VER is kept under 80500000 level. The proper solution would be
 	to rename the getline function to something else in the struct (and in all places
 	it is used) - and avoiding to use POSIX functions in structs, but this change would
-	impact on all other operating systems. (added the the VMS TODO list)
+	impact on all other operating systems. (added to the VMS TODO list)
 	Read more about at https://forum.vmssoftware.com/viewtopic.php?f=38&t=8914&p=20049
 - os_vms_conf.h includes have been reviewed for all architectures
 - added support for the MODIFIED_BY define
diff --git a/runtime/doc/vim9class.txt b/runtime/doc/vim9class.txt
index cb4dd9e..97813f0 100644
--- a/runtime/doc/vim9class.txt
+++ b/runtime/doc/vim9class.txt
@@ -1,4 +1,4 @@
-*vim9class.txt*	For Vim version 9.0.  Last change: 2023 Nov 20
+*vim9class.txt*	For Vim version 9.0.  Last change: 2023 Dec 14
 
 
 		  VIM REFERENCE MANUAL	  by Bram Moolenaar
@@ -220,7 +220,7 @@
 <
 							*E1390*
 Not only is this text you need to write, it also has the type of each
-variables twice.  Since this is so common a shorter way to write new() is
+variable twice.  Since this is so common a shorter way to write new() is
 provided: >
 
 	   def new(this.lnum, this.col)
@@ -265,7 +265,7 @@
 
 							*E1386*
 When invoking an object method, the method name should be preceded by the
-object variable name.  A object method cannot be invoked using the class
+object variable name.  An object method cannot be invoked using the class
 name.
 
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