Fix grammatical error in JavaDoc of setResponse method in MockClientHttpRequest

This pull request fixes a grammatical mistake in the JavaDoc of the setResponse method in MockClientHttpRequest.

- Original: "the this request"
- Changed to: "this request"

This change improves the clarity and quality of the documentation.

Signed-off-by: DongNyoung Lee <[email protected]>

Author: Dongnyoung

spring-test/src/main/java/org/springframework/mock/http/client/MockClientHttpRequest.java

@@ -104,7 +104,7 @@ public URI getURI() {
 
 	/**
 	 * Set the {@link ClientHttpResponse} to be used as the result of executing
-	 * the this request.
+	 * this request.
 	 * @see #execute()
 	 */
 	public void setResponse(ClientHttpResponse clientHttpResponse) {