update packages

lisp/org/doc/org-manual.org

@@ -125,7 +125,7 @@ To avoid interference with the built-in Org mode, you can use the
 command line (you need Emacs 30 or later):
 
 #+begin_src sh
-emacs -Q -batch -eval "(progn (require 'package) (package-initialize) (package-refresh-contents) (package-upgrade 'org))"
+emacs -Q -batch -eval "(progn (package-refresh-contents) (package-upgrade 'org))"
 #+end_src
 
 This approach has the advantage of isolating the upgrade process from
@@ -2252,7 +2252,7 @@ instead of letting Calc handle the formatting.  A few examples:
 | =exp($2)+exp($1)=  | Math functions can be used                          |
 | =$0;%.1f=          | Reformat current cell to 1 decimal                  |
 | =($3-32)*5/9=      | Fahrenheit to Celsius conversion                    |
-| =$c/$1/$cm=        | Herz to centimeter conversion, using =constants.el= |
+| =$c/$1/$cm=        | Hertz to centimeter conversion using =constants.el= |
 | =tan($1);Dp3s1=    | Compute in degrees, precision 3, display SCI 1      |
 | =sin($1);Dp3%.1e=  | Same, but use ~format~ specifier for display        |
 | =vmean($2..$7)=    | Compute column range mean, using vector function    |