Update syntax tree definition

Author: GrishaVar

compiler/rustc_ast/src/ast.rs

@@ -1616,7 +1616,7 @@ pub enum StrStyle {
     /// A raw string, like `r##"foo"##`.
     ///
     /// The value is the number of `#` symbols used.
-    Raw(u16),
+    Raw(u8),
 }
 
 /// An AST literal.

compiler/rustc_ast/src/token.rs

@@ -60,9 +60,9 @@ pub enum LitKind {
     Integer,
     Float,
     Str,
-    StrRaw(u16), // raw string delimited by `n` hash symbols
+    StrRaw(u8), // raw string delimited by `n` hash symbols
     ByteStr,
-    ByteStrRaw(u16), // raw byte string delimited by `n` hash symbols
+    ByteStrRaw(u8), // raw byte string delimited by `n` hash symbols
     Err,
 }