Warnings opening Keyboard shortcuts page, and minor text suggestions

This might be worth multiple issues (maybe separate out the alignment issues, and the effect ones). If so, let's focus on teh _ in the shortcut name/

Steps to reproduce:

• open Inkscape
• open Preferences > Interface > Keyboard
• Expand Text

What happened?

• _Convert to text and _Unflow still have the _ present Fixed by !4240 (merged)
• Also Layer's Switch to Layer Belo_w and Switch to Layer Abov_e and Move Selection to Layer Bel_ow Fixed by !4240 (merged)
• Dialogs don't have spaces in the names Fixed by !4240 (merged)
• Effect and Extension are separate (should probably be the same category). Reported in #3346 (closed) and fixed by !5244 (merged)

And in the Objects section

• app.object-align should be separated out Done in !4238 (merged)
• The actions that require a parameter should not have an option to define a shortcut for calling without a parameter
• The separate options should have better titles (e.g. Distribute, even bottom edges instead of even bottom edges and Distribute text vertically instead of Distribute text objects

And some warnings

(org.inkscape.Inkscape:418439): Gtk-WARNING **: 22:57:33.386: Failed to set text from markup due to error parsing markup: Error on line 1: Entity did not end with a semicolon; most likely you used an ampersand character without intending to start an entity — escape ampersand as &

• In the Edit section it is raised for <span> &, Ctrl+7 </span>
• In the Dialogs section it is raised for <span> Ctrl+&, Shift+Ctrl+7 </span>

What should have happened?

• Above problems not present (i.e. No _, dialogs names have spaces, Combine Effect and Extension, separate alignment actions)

Version info

• Inkscape 1.2-dev (71ef163e, 2022-01-31) Linux Mint 20