Fix many typos in docs and comments

This commit corrects many typos found in scaladocs, comments and
documentation. It should reduce a bit number of PRs which fix one
typo.

There are no changes in the 'real' code except one corrected name of
a JUnit test method and some error messages in exceptions. In the case
of typos in other method or field names etc., I just skipped them.

Obviously this commit doesn't fix all existing typos. I just generated
in IntelliJ the list of potential typos and looked through it quickly.

1 files changed, 1 insertions, 1 deletions

diff --git a/src/compiler/scala/tools/nsc/transform/patmat/MatchTranslation.scala b/src/compiler/scala/tools/nsc/transform/patmat/MatchTranslation.scala
index 22661d6ccf..e8c75ed1ee 100644
--- a/src/compiler/scala/tools/nsc/transform/patmat/MatchTranslation.scala
+++ b/src/compiler/scala/tools/nsc/transform/patmat/MatchTranslation.scala
@@ -580,7 +580,7 @@ trait MatchTranslation {
             // duplicated with the extractor Unapplied
             case Apply(x, List(i @ Ident(nme.SELECTOR_DUMMY))) =>
               treeCopy.Apply(t, x, binderRef(i.pos) :: Nil)
-            // SI-7868 Account for numeric widening, e.g. <unappplySelector>.toInt
+            // SI-7868 Account for numeric widening, e.g. <unapplySelector>.toInt
             case Apply(x, List(i @ (sel @ Select(Ident(nme.SELECTOR_DUMMY), name)))) =>
               treeCopy.Apply(t, x, treeCopy.Select(sel, binderRef(i.pos), name) :: Nil)
             case _ =>