Fix typos by codespell (#7600)

# Description

Found via `codespell -S target -L
crate,ser,numer,falsy,ro,te,nd,bu,ndoes,statics,ons,fo,rouge,pard`

# User-Facing Changes

None.

# Tests + Formatting

None and done.

# After Submitting

None.

crates/nu-protocol/src/engine/engine_state.rs

@@ -177,7 +177,7 @@ impl EngineState {
                 .iter_mut()
                 .find(|(name, _)| name == &delta_name)
             {
-                // Upating existing overlay
+                // Updating existing overlay
                 for item in delta_overlay.decls.into_iter() {
                     existing_overlay.decls.insert(item.0, item.1);
                 }