Eliminate warnings on `sbt doc` and `sbt unidoc` (#1470)

* Eliminate warnings on `sbt doc` and `sbt unidoc`
- removed toFirrtl reference on MultiTargetAnnotation
- lots of places where package path has to be added to comment references
- Change to use `/** text starts here` convention when wrong in comment with a doc fix.
  - Did not exhaustively change these
- Wrestled doc example in RenderDiGraph#renderNode, not sure if I won
- Cleaned up InferWidths & CatchExceptions imports
- Added missing license message to a couple of files.
- fixed a couple of stale parameter names in scaladoc
- Added @unchecked to stop erasure warning in Emitting where emission annotations are collected
- Change types to [_] on match in RenameMap#recordAll to fix erasure warning

* Where  possible change [[firrtl.ir.X]] to [[firrtl.ir.X X]] for better display in scaladoc

Co-authored-by: mergify[bot] <37929162+mergify[bot]@users.noreply.github.com>

1 files changed, 1 insertions, 1 deletions

diff --git a/src/main/scala/firrtl/annotations/Annotation.scala b/src/main/scala/firrtl/annotations/Annotation.scala
index 3cf6d5ef..4c39bfee 100644
--- a/src/main/scala/firrtl/annotations/Annotation.scala
+++ b/src/main/scala/firrtl/annotations/Annotation.scala
@@ -80,7 +80,7 @@ trait SingleTargetAnnotation[T <: Named] extends Annotation {
 /** [[MultiTargetAnnotation]] keeps the renamed targets grouped within a single annotation. */
 trait MultiTargetAnnotation extends Annotation {
   /** Contains a sequence of [[Target]].
-    * When creating in [[toFirrtl]], [[targets]] should be assigned by `Seq(Seq(TargetA), Seq(TargetB), Seq(TargetC))`
+    * When created, [[targets]] should be assigned by `Seq(Seq(TargetA), Seq(TargetB), Seq(TargetC))`
     * */
   val targets: Seq[Seq[Target]]