Git assessement failed

I got this message.

Unfortunately you did not receive a passing score on your latest assessment.

The questions you missed were:

Unfortunately you did not receive a passing score on your latest assessment.

The questions you missed were:


Unfortunately you did not receive a passing score on your latest assessment.

The questions you missed were: 
Git branch: master 
--- a/site.html
+++ b/site.html
@@ -8,8 +8,8 @@
- <img src="images/drawings/joseph-roulin.jpg">
+ <img src="images/drawings/joseph-roulin.jpg">
Git branch: together 
--- a/site.html
+++ b/site.html
@@ -8,9 +8,9 @@
- <img src="images/drawings/joseph-roulin.jpg">
+ <img src="images/drawings/joseph-roulin.jpg"> 

My understanding is that I have same number of lines as the solution file.
My master file has an additional line of Joseph jpg
Also together has the line of Joseph jpg

Can someone help me what the message mean