fix: more typos

[realeinherjar]

More typos fix before #1165

Changelog notice

Fix more typos in the docs

Checklists

All Submissions:

• I've signed all my commits
• I followed the contribution guidelines
• I ran cargo fmt and cargo clippy before committing

New Features:

• I've added tests for the new feature
• I've added docs for the new feature

Bugfixes:

• This pull request breaks the existing API
• I've added tests to reproduce the issue which are now passing
• I'm linking the issue being fixed by this PR

[notmandatory]

I moved this to the beta milestone so we can collect more typo fixes if they come up here.

[realeinherjar]

This is ready to merge and it is a block for #1165

[ValuedMammal]

looks like in #1220 this got corrected to 'should' instead of 'could'

bdk/crates/bdk/src/wallet/signer.rs

Lines 761 to 762 in 46d39be

	/// Defaults to `false` to mitigate the "SegWit bug" which should trick the wallet into
	/// paying a fee larger than expected.

[ValuedMammal]

bdk/crates/bdk/src/wallet/coin_selection.rs

Lines 189 to 190 in 46d39be

	/// Remaining amount after deducing fees and outgoing outputs
	pub excess: Excess,

deducing -> deducting

[ValuedMammal]

after #1178 the doc for ‎Store::aggregate_changesets is stale.

bdk/crates/file_store/src/store.rs

Lines 138 to 142 in 46d39be

	/// Loads all the changesets that have been stored as one giant changeset.
	///
	/// This function returns a tuple of the aggregate changeset and a result that indicates
	/// whether an error occurred while reading or deserializing one of the entries. If so the
	/// changeset will consist of all of those it was able to read.

it could say something like

/// This function returns the aggregate changeset, which may be `None` if nothing 
/// was persisted. If reading or deserializing any of the entries fails, an error is 
/// returned that includes all those it was able to read.

[storopoli]

We can close this