By default WeSupply creates two CMS pages in Magento containing the word wesupply to avoid duplicate page issues in case those pages are already present in Magento:
To remove "WeSupply" from the URL you need to first remove the word wesupply from the magento CMS page.
Rename under Search Engine Optimization -> URL Key -> wesupply-store-details to store-details
Rename under Search Engine Optimization -> URL Key -> wesupply-store-locator to store-locator
Next, go into the WeSupply admin section to Settings -> Providers -> Embedded Settings -> click on the Disabled/Enabled toggle button and rename the Store Map URL and Store Details URL to the new links (store-locator / store-details ). Then click on Save.