Grammar: remove comma splices

Author: neuroevolutus

_tour/tour-of-scala.md

@@ -28,7 +28,7 @@ Scala is a modern multi-paradigm programming language designed to express common
 Scala is a pure object-oriented language in the sense that [every value is an object](unified-types.html). Types and behaviors of objects are described by [classes](classes.html) and [traits](traits.html). Classes can be extended by subclassing, and by using a flexible [mixin-based composition](mixin-class-composition.html) mechanism as a clean replacement for multiple inheritance.
 
 ## Scala is functional ##
-Scala is also a functional language in the sense that [every function is a value](unified-types.html). Scala provides a [lightweight syntax](basics.html#functions) for defining anonymous functions, it supports [higher-order functions](higher-order-functions.html), it allows functions to be [nested](nested-functions.html), and it supports [currying](multiple-parameter-lists.html). Scala's [case classes](case-classes.html) and its built-in support for [pattern matching](pattern-matching.html) provide the functionality of algebraic types, which are used in many functional languages. [Singleton objects](singleton-objects.html) provide a convenient way to group functions that aren't members of a class.
+Scala is also a functional language in the sense that [every function is a value](unified-types.html). Scala provides a [lightweight syntax](basics.html#functions) for defining anonymous functions, supports [higher-order functions](higher-order-functions.html), allows functions to be [nested](nested-functions.html), and supports [currying](multiple-parameter-lists.html). Scala's [case classes](case-classes.html) and its built-in support for [pattern matching](pattern-matching.html) provide the functionality of algebraic types, which are used in many functional languages. [Singleton objects](singleton-objects.html) provide a convenient way to group functions that aren't members of a class.
 
 Furthermore, Scala's notion of pattern matching naturally extends to the [processing of XML data](https://github.com/scala/scala-xml/wiki/XML-Processing) with the help of [right-ignoring sequence patterns](regular-expression-patterns.html), by way of general extension via [extractor objects](extractor-objects.html). In this context, [for comprehensions](for-comprehensions.html) are useful for formulating queries. These features make Scala ideal for developing applications like web services.