[backport] Fixes cut sentences in the generated scaladocs

This commit changes all first sentences of library functions which
contain `i.e.` or `e.g.` and adds a `,` to prevent that the scaladoc
summary sentence is cut after this abbreviation.

This is possible as pull/3824 fixed how Scaladoc parses the first
sentence of a method description into a sumary sentence(now the first
sentence has to end with a dot followed by whitespace).

Only docs in the core library are changed (src/library/**/*.scala)
and only if they occur in the first sentence.

Review by @heathermiller

(cherry picked from commit 72721ff5dd06dea1235ecb71acae0bd61aee4814)

1 files changed, 1 insertions, 1 deletions

diff --git a/src/library/scala/collection/TraversableOnce.scala b/src/library/scala/collection/TraversableOnce.scala
index a8c4e047ab..13cd99d910 100644
--- a/src/library/scala/collection/TraversableOnce.scala
+++ b/src/library/scala/collection/TraversableOnce.scala
@@ -75,7 +75,7 @@ trait TraversableOnce[+A] extends Any with GenTraversableOnce[A] {
   //         at least indirectly. Currently, these are `ArrayOps` and `StringOps`.
   //         It is also implemented in `TraversableOnce[A]`.
   /** A version of this collection with all
-   *  of the operations implemented sequentially (i.e. in a single-threaded manner).
+   *  of the operations implemented sequentially (i.e., in a single-threaded manner).
    *
    *  This method returns a reference to this collection. In parallel collections,
    *  it is redefined to return a sequential implementation of this collection. In