Fix typos in integrations.md

integrations.md

@@ -5,7 +5,7 @@ First of all, you'll need to know the contract's
 Addresses of the contract and the token representing liquidity are
 [here](https://github.com/curvefi/curve-contract/blob/compounded/deployed/2020-01-21_mainnet/mainnet.log).
 
-Next is the breif description of methods you need to fascilitate exchanges.
+Next is the brief description of methods you need to facilitate exchanges.
 
 ## Getting static information
 
@@ -79,11 +79,11 @@ Used to exchange `DAI<>USDC` (and analogues in future deployments).
 def get_virtual_price() -> uint256:
 ```
 
-This read-only methods calculates price of liquidity share. In order to
+This read-only method calculates price of liquidity share. In order to
 calculate profits between two points, you measure virtual price in those two
 moments and divide later by the earlier, and subtract 1.
 
 The method doesn't measure the real price in dollars, but rather profit on top
-of what you would have observe with fee-less exchange. It is not affected by
+of what you would have observed with fee-less exchange. It is not affected by
 market fluctuations, and can measure returns even in a volatile market, over any
 periods of time.