Fix comment

Author: guibescos

pyth-sdk-solana/src/state.rs

@@ -225,7 +225,7 @@ pub struct PriceInfo {
     pub price:    i64,
     /// confidence interval around the price.
     /// For the aggregate confidence use `get_price_no_older_than()` whenever possible. Accessing
-    /// fields directly might expose you to stale or invalid prices. checks to make sure price
+    /// fields directly might expose you to stale or invalid prices.
     /// is valid.
     pub conf:     u64,
     /// status of price (Trading is valid)