fix style issue

Author: actuaryzhang

R/pkg/R/mllib_regression.R

@@ -106,7 +106,7 @@ setMethod("spark.glm", signature(data = "SparkDataFrame", formula = "formula"),
               print(family)
               stop("'family' not recognized")
             }
-            
+
             # recover variancePower and linkPower from the specified tweedie family
             if (tolower(family$family) == "tweedie") {
               variancePower <- log(family$variance(exp(1)))

R/pkg/inst/tests/testthat/test_mllib_regression.R

@@ -88,7 +88,7 @@ test_that("spark.glm and predict", {
     glm(Sepal.Width ~ Sepal.Length + Species, data = iris,
         family = tweedie(var.power = 1.2, link.power = 1.0)), iris))
   expect_true(all(abs(rVals - vals) < 1e-6), rVals - vals)
-  
+
   # Test stats::predict is working
   x <- rnorm(15)
   y <- x + rnorm(15)