revise incorrect captions

Author: shineyruan

content/posts/newcastle/index.en.md

@@ -50,17 +50,15 @@ seo:
 
 ![](newcastle.jpg "An overview of the city of Newcastle.")
 
-![](_RZH4464postruanzh.jpg "Newcastle train station.")
+![](_RZH4464postruanzh.jpg "The train station.")
 
-![](_RZH4464postruanzh.jpg "City of Newcastle in the morning light.")
+![](_RZH4534postruanzh.jpg "City of Newcastle in the morning light.")
 
-![](_RZH4534postruanzh.jpg "The two iconic bridges.")
-
-![](_RZH4530postruanzh.jpg " ")
+![](_RZH4530postruanzh.jpg "The two iconic bridges.")
 
 ![](_RZH4468postruanzh.jpg " ")
 
-![](_RZH4465postruanzh.jpg "A giant shadow by sunlight")
+![](_RZH4465postruanzh.jpg " ")
 
 ![](_RZH4458postruanzh.jpg " ")