updated base ref for @SPEC entries

Author: ylafon

org/w3c/css/properties/css3/CssScrollSnapAlign.java

@@ -18,7 +18,7 @@
 import static org.w3c.css.values.CssOperator.SPACE;
 
 /**
- * @spec https://www.w3.org/TR/2017/CR-css-scroll-snap-1-20170824/#propdef-scroll-snap-align
+ * @spec https://www.w3.org/TR/2019/CR-css-scroll-snap-1-20190131/#propdef-scroll-snap-align
  */
 public class CssScrollSnapAlign extends org.w3c.css.properties.css.CssScrollSnapAlign {
 

org/w3c/css/properties/css3/CssScrollSnapStop.java

@@ -13,7 +13,7 @@
 import org.w3c.css.values.CssValue;
 
 /**
- * @spec https://www.w3.org/TR/2017/CR-css-scroll-snap-1-20170824/#propdef-scroll-snap-stop
+ * @spec https://www.w3.org/TR/2019/CR-css-scroll-snap-1-20190131/#propdef-scroll-snap-stop
  */
 public class CssScrollSnapStop extends org.w3c.css.properties.css.CssScrollSnapStop {
 

org/w3c/css/properties/css3/CssScrollSnapType.java

@@ -18,7 +18,7 @@
 import static org.w3c.css.values.CssOperator.SPACE;
 
 /**
- * @spec https://www.w3.org/TR/2017/CR-css-scroll-snap-1-20170824/#propdef-scroll-snap-type
+ * @spec https://www.w3.org/TR/2019/CR-css-scroll-snap-1-20190131/#propdef-scroll-snap-type
  */
 public class CssScrollSnapType extends org.w3c.css.properties.css.CssScrollSnapType {