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/test/files/run/t8253.scala b/test/files/run/t8253.scala
index c4800b4491..a00d8b91a4 100644
--- a/test/files/run/t8253.scala
+++ b/test/files/run/t8253.scala
@@ -10,5 +10,5 @@ object Test extends App {
   show("<sample xmlns:foo={identity(ns1)}/>", q"<sample xmlns:foo={ns1}/>")
 
   // `identity(foo)` used to match the overly permissive match in SymbolXMLBuilder
-  // which was intented to more specifically match `_root_.scala.xml.Text(...)`
+  // which was intended to more specifically match `_root_.scala.xml.Text(...)`
 }