fixed scaladoc comment

Author: gdiet

src/main/scala/scala/collection/next/package.scala

@@ -21,13 +21,12 @@ package object next {
     new NextIterableOnceOpsExtensions(col)
 
   implicit final class OptionOpsExtensions[A](val v: Option[A]) extends AnyVal {
-    /** Apply the side-effecting function $f to the option's value,
-      * if it is nonempty. Otherwise, do nothing.
-      *
-      * @param f a function to apply to the option's value
-      * @tparam B the return type of f
-      * @return the option
-      */
+    /** Apply the side-effecting function `f` to the option's value
+     *  if it is nonempty. Otherwise, do nothing.
+     *
+     *  @param  f  a function to apply to the option's value
+     *  @return the option
+     */
     def tapEach[B](f: A => B): Option[A] = { v.foreach(f); v }
   }
 }