Fix typo in README example to use jsonPath method correctly

BGMSound · BGMSound · commit 1d3e65c56a2a · 2026-03-29T21:02:19.000+09:00
diff --git a/README.md b/README.md
@@ -102,7 +102,7 @@ fun documentationGetApi() {
         responseBody {
             field("testField", "test", "test")
         }
-    }.expect(jsonPath("$testField").value("test"))
+    }.jsonPath("$testField").value("test")
 }
 ```
 

Original file line number	Diff line number	Diff line change
`@@ -102,7 +102,7 @@ fun documentationGetApi() {`
`102`	`102`	`responseBody {`
`103`	`103`	`field("testField", "test", "test")`
`104`	`104`	`}`
`105`		`- }.expect(jsonPath("$testField").value("test"))`
	`105`	`+ }.jsonPath("$testField").value("test")`
`106`	`106`	`}`
`107`	`107`	```
`108`	`108`