Fix Frost PlagueRider's Ultimate Tooltip

[[GTH]MrSnowJr]

Epidemic (Boosted)

Increased damage from Epidemic by 280/370/460 to 370/460/550

Deals 280/370/460 magic damage to the target and bounces 7 times.

Tooltip is borked, and shouldnt the name change to Pandemic? If im not mistaken thats what normal Plague's ulti turns into.

[[PonE]MojoSpirit]

Long as it works as intended?
Do you read plagues ulti after playing it like 50 times?
I can't even name the skills of my most played heroes.

[[UniB]TehAl]

Fixing it for clarity is still worth it, don't get why anyone could complain at that..

[[E]Evil_Andrex]

Pandemic isn't seen anywhere. It turns from Plague Carrier to Epidemic.

Working as intended.