docs: minor improvemtn

Author: MathisGD

src/morpho-chainlink-v2/MorphoChainlinkOracleV2.sol

@@ -54,9 +54,9 @@ contract MorphoChainlinkOracleV2 is IMorphoChainlinkOracleV2 {
     /// - Feeds have the same behavioral assumptions as Chainlink's.
     /// - Feeds are set in the correct order.
     /// - Decimals passed as argument are correct.
-    /// - The vault's sample shares quoted as assets and the base feed prices don't overflow when multiplied.
+    /// - The vaults' sample shares quoted as assets and the base feed prices don't overflow when multiplied.
     /// - The quote feed prices don't overflow when multiplied.
-    /// - The vault, if set, is ERC4626-compliant.
+    /// - Vaults are either ERC4626-compliant or the address zero.
     /// @dev The base asset is the collateral token and the quote asset is the loan token.
     /// @param baseVault Base vault. Pass address zero to omit this parameter.
     /// @param baseVaultConversionSample The sample amount of base vault shares used to convert to underlying.