programs/{,zed}: new jj email and sed markdown line length

Signed-off-by: Anirudh Oppiliappan <did:plc:hwevmowznbiukdf6uk5dwrrq>

programs/jujutsu.nix

···
     settings = {
       user = {
         name = "Anirudh Oppiliappan";
-        email = "[e-mail]";
+        email = "[e-mail]";
       };
       ui = {
         # paginate = "never";

programs/zed/settings.nix

···
       HTML = {
         format_on_save = "off";
       };
+      Markdown = {
+        preferred_line_length = 72;
+        soft_wrap = "preferred_line_length";
+      };
     };
     active_pane_modifiers = {
       inactive_opacity = 0.8;