Fix javadoc syntax

Fix javadoc syntax by wrap `<` into an inline code block.

Author: sormuras

core/src/main/java/com/google/googlejavaformat/java/JavaInputAstVisitor.java

@@ -2574,7 +2574,7 @@ private void visitToDeclare(
         typeWithDims);
   }
 
-  /** Does not omit the leading '<', which should be associated with the type name. */
+  /** Does not omit the leading {@code "<"}, which should be associated with the type name. */
   protected void typeParametersRest(
       List<? extends TypeParameterTree> typeParameters, Indent plusIndent) {
     builder.open(plusIndent);