Typo in Product bundle view

Problem/Motivation

There are references to a mis spelt word (bundel) in the code

Steps to reproduce

Visit: admin/commerce/product-bundles with no product bundles added.
View the No items message "No product bundels available."

Proposed resolution

Replace the word "bundel" with "bundle"

Remaining tasks

Find and replace "bundel" for "bundle"
commit and push
test the solution
merge and release

User interface changes

Corrected spelling