docs: add no-unused-expressions rule for mdx

.eslintrc.yml

@@ -11,6 +11,8 @@ overrides:
       - "*.md"
       - "*.mdx"
     parser: "eslint-mdx"
+    rules:
+      no-unused-expressions: "off"
   - files:
       - "*.ts"
       - "*.tsx"

docs/contracts/v2/guides/04-create-airstream.mdx

@@ -187,7 +187,7 @@ after user A, then the stream for user B will end 2 days after the stream for us
 ### Aggregate Amount
 
 This is the total amount of assets you want to airdrop to your users, denoted in units of the asset's decimals. Let say
-you want to airdrop 100M tokens of DAI. Then, the aggregate amount would be 100M\*10^18.
+you want to airdrop 100M tokens of DAI. Then, the aggregate amount would be $100M*10^{18}$.
 
 ```solidity
 uint256 aggregateAmount = 100000000e18;