Scaladoc: Unescaped special characters in Quotes documentation

closes scala#13746

Author: KacperFKorban

scaladoc-testcases/src/tests/markdowncode.scala

@@ -0,0 +1,5 @@
+package tests.markdowncode
+
+/** Some text `{ <statements: List[Statement]>; <expr: Term> }` */
+val aVal: Float
+  = 1.2f

scaladoc/src/dotty/tools/scaladoc/renderers/DocRenderer.scala

@@ -81,12 +81,12 @@ class DocRender(signatureRenderer: SignatureRenderer)(using DocContext):
     case Italic(text) => span(cls:="italic")(renderElement(text))
     case Underline(text) => span(cls:="underline")(renderElement(text))
     case Bold(text) => span(cls:="bold")(renderElement(text))
-    case Monospace(text) => code(renderElement(text))
+    case Monospace(text) => code(renderElement(text)) // escape
     case Superscript(text) => span(cls:="superscript")(renderElement(text))  // TODO implement style
     case Subscript(text) => span(cls:="subscript")(renderElement(text))  // TODO implement style
     case Link(target, body) =>
       renderLink(target, default => body.fold[TagArg](default)(renderElement))
-    case Text(text) => raw(text)
+    case Text(text) => raw(text.escapeReservedTokens)
     case Summary(text) => renderElement(text)
     case HtmlTag(content) => raw(content)
 

scaladoc/test/dotty/tools/scaladoc/signatures/TranslatableSignaturesTestCases.scala

@@ -90,3 +90,5 @@ class ContextBounds extends SignatureTest("contextBounds", SignatureTest.all)
 class FBoundedTypeParameters extends SignatureTest("fboundedTypeParameters", SignatureTest.all)
 
 class Exports extends SignatureTest("exports2", SignatureTest.all, sourceFiles = List("exports1", "exports2"))
+
+class MarkdownCode extends SignatureTest("markdowncode", SignatureTest.all)