Fix trivial typo in docs of Tracing (#918)

lambda-runtime-api-client/src/tracing.rs

@@ -23,7 +23,7 @@ const DEFAULT_LOG_LEVEL: &str = "INFO";
 /// if they're configured for your function.
 ///
 /// This subscriber sets the logging level based on environment variables:
-///     - if `AWS_LAMBDA_LOG_LEVEL` is set, it takes predecence over any other environment variables.
+///     - if `AWS_LAMBDA_LOG_LEVEL` is set, it takes precedence over any other environment variables.
 ///     - if `AWS_LAMBDA_LOG_LEVEL` is not set, check if `RUST_LOG` is set.
 ///     - if none of those two variables are set, use `INFO` as the logging level.
 ///