join kdocs fixes

Author: AndreiKingsley

core/src/main/kotlin/org/jetbrains/kotlinx/dataframe/api/join.kt

@@ -91,7 +91,7 @@ private interface JOIN_METHOD
 internal interface JoinDslDescription
 
 /**
- * Select join columns (incl. with different names in `this` and [other][other] [DataFrame]s)
+ * Select join columns (including those that have different names in different [DataFrame]s)
  * using [JoinDsl].
  *
  * @include [JoinDslDescription]

core/src/main/kotlin/org/jetbrains/kotlinx/dataframe/api/joinWith.kt

@@ -70,7 +70,7 @@ public interface JoinedDataRow<out A, out B> : DataRow<A> {
  * allowing you to reference its values directly.
  *
  * The [row][DataRow] of the right [DataFrame] is available
- * via [right][JoinedDataRow.right].
+ * as [right][JoinedDataRow.right].
  *
  * The expression must return a [Boolean] indicating whether
  * the rows from the left and right [DataFrame]s match.