Update class-wc-admin-assets.php because spell mistake

I found spell mistake.
#109 monitary to #109 monetary
missing ending semicolons on wp_nonce_field()
Fixed a spacing issue with adding braces with recent WordPress Standards
changing standards to always require braces. see #4309
Some braces for the new WordPress standard

Simple braces being added
Change money_format to currency_format for API index
Fix authentication error message typos
Fix duplicate "Link:" content with pagination link headers
Fix strict warnings for cat walker class, closes #4319
Merge pull request #4317 from NikV/master

Some braces for the new WordPress standard
Merge pull request #4316 from BFTrick/add-braces

Changing Standards to Always Require Braces
Merge pull request #4312 from NikV/patch-2

Fixed a spacing issue with adding braces with recent WordPress Standards
Merge pull request #4308 from splashingpixels/master

missing ending semicolons on wp_nonce_field()
Merge pull request #4318 from maxrice/rest-api-tweaks

REST API Tweaks
Merge pull request #4321 from kloon/fix_cat_walker_strict_warnings

Fix strict warnings for cat walker class, closes #4319
Merge pull request #4304 from shoheitanaka/patch-2

Update class-wc-admin-assets.php because spell mistake
Merge remote-tracking branch 'upstream/master'

Conflicts:
	includes/wc-formatting-functions.php