How to fix my permalink?

Hi,
I had mixed up my permalink accidentally, my permalink I had been set up was: /%postname%/, and all my permalink were display as /%postname%/ . For example, one of my post’s permalink was as this originally:
https://mydomaindotcom /top-6-internet-marketing-strategies’-pros-and-cons/
But today I was cross out the “/” at the end accidentally, and now all my permalink appeared as:
https://mydomaindotcom /top-6-internet-marketing-strategies%E2%80%99-pros-and-cons/ It mixed with something that is not suppose to be there in the middle of the slug.

Have you notice the change? What a mess! I actually had ad the “/” back to the end for my permalink setting. But it seems not working.

Would you please tell my how to fix this problem?