Fix */* in Javadoc

This commit changes {@code &#42;&#47;&#42;} to <code>&#42;&#47;&#42;</code>
so that "*/*" is rendered correctly.

Closes gh-23439

spring-web/src/main/java/org/springframework/http/converter/ByteArrayHttpMessageConverter.java

@@ -28,7 +28,7 @@ import org.springframework.util.StreamUtils;
 /**
  * Implementation of {@link HttpMessageConverter} that can read and write byte arrays.
  *
- * <p>By default, this converter supports all media types ({@code &#42;&#47;&#42;}), and
+ * <p>By default, this converter supports all media types (<code>&#42;/&#42;</code>), and
  * writes with a {@code Content-Type} of {@code application/octet-stream}. This can be
  * overridden by setting the {@link #setSupportedMediaTypes supportedMediaTypes} property.
  *

spring-web/src/main/java/org/springframework/http/converter/StringHttpMessageConverter.java

@@ -33,7 +33,7 @@ import org.springframework.util.StreamUtils;
 /**
  * Implementation of {@link HttpMessageConverter} that can read and write strings.
  *
- * <p>By default, this converter supports all media types ({@code &#42;&#47;&#42;}),
+ * <p>By default, this converter supports all media types (<code>&#42;/&#42;</code>),
  * and writes with a {@code Content-Type} of {@code text/plain}. This can be overridden
  * by setting the {@link #setSupportedMediaTypes supportedMediaTypes} property.
  *