Apply suggestions from code review

Co-authored-by: Jan Chyb <48855024+jchyb@users.noreply.github.com>

Author: nicolasstucki

compiler/src/dotty/tools/dotc/quoted/QuotePatterns.scala

@@ -30,7 +30,7 @@ object QuotePatterns:
     def traverse(tree: Tree)(using Context): Unit = tree match {
       case tree: SplicePattern =>
         if !tree.body.typeOpt.derivesFrom(defn.QuotedExprClass) then
-          report.error(i"Spice pattern must match an Expr[...]", tree.body.srcPos)
+          report.error(i"Splice pattern must match an Expr[...]", tree.body.srcPos)
       case tdef: TypeDef if tdef.symbol.isClass =>
         val kind = if tdef.symbol.is(Module) then "objects" else "classes"
         report.error(em"Implementation restriction: cannot match $kind", tree.srcPos)

tests/neg-macros/i19941.check

@@ -1,4 +1,4 @@
 -- Error: tests/neg-macros/i19941.scala:7:14 ---------------------------------------------------------------------------
 7 |    case '{ ${hd *: tl} : *:[Int, EmptyTuple] } => '{ ??? } // error
   |              ^^^^^^^^
-  |              Spice pattern must match an Expr[...]
+  |              Splice pattern must match an Expr[...]