chore(geb): formatting

Author: matrei

grails-geb/src/testFixtures/groovy/grails/plugin/geb/GrailsGebSettings.groovy

@@ -105,7 +105,7 @@ class GrailsGebSettings {
                 }
             } catch (NumberFormatException ignored) {
                 log.warn(
-                        "Could not parse property [{}] with value [{}] as a Number. Using default value [{}] instead.",
+                        'Could not parse property [{}] with value [{}] as a Number. Using default value [{}] instead.',
                         propertyName,
                         propValue,
                         defaultValue

grails-geb/src/testFixtures/groovy/grails/plugin/geb/WebDriverContainerHolder.groovy

@@ -165,7 +165,6 @@ class WebDriverContainerHolder {
             )
         }
 
-
         // Ensure that the driver points to the re-initialized container with the correct host.
         // The driver is explicitly quit by us in stop() method, to fulfill our resulting responsibility.
         gebConf.cacheDriver = false