Fix docblock

Author: alcuadrado

packages/hardhat-network-helpers/src/loadFixture.ts

@@ -69,7 +69,9 @@ export async function loadFixture<T>(fixture: Fixture<T>): Promise<T> {
   }
 }
 
-// function to clear the snapshots array when hardhat_reset is called..
+/**
+ * Clears every existing snapshot.
+ */
 export async function clearSnapshots() {
   snapshots = [];
 }