correct extensions

4 files changed, 3 insertions, 3 deletions

diff --git a/1.md b/1.md
index b7c0933..3d97bf7 100644
--- a/1.md
+++ b/1.md
@@ -413,7 +413,7 @@ $ git log --oneline --decorate --graph --all
 
 Beti ez da hain erreza. Demagun:
 
-![](img/basic-branching-6.jpg){ height=180px }
+![](img/basic-branching-6.png){ height=180px }
 
 ## Adarrak eta mergeak — IV
 
@@ -421,7 +421,7 @@ Arbaso amankomuna (*common ancestor*) ateratzen saiatzen da eta bi buruekin eta
 arbaso amankomunarekin *three-way merge* bat egiten du.
 
 ![`git checkout master`  
-`git merge iss53`](img/basic-merging-1.jpg){ height=180px }
+`git merge iss53`](img/basic-merging-1.png){ height=180px }
 
 ## Adarrak eta mergeak — V
 
@@ -430,7 +430,7 @@ Commit berri bat gehitzen du, bi adarrak lotzen dituena.
 *Merge* commita da: bi guraso (edo gehiago) ditu.
 
 ![`git checkout master`  
-`git merge iss53`](img/basic-merging-2.jpg){ height=180px }
+`git merge iss53`](img/basic-merging-2.png){ height=180px }
 
 ## Konfliktoak — I
 
diff --git a/img/basic-branching-6.jpg b/img/basic-branching-6.png
index 6023d69..6023d69 100644
--- a/img/basic-branching-6.jpg
+++ b/img/basic-branching-6.png
diff --git a/img/basic-merging-1.jpg b/img/basic-merging-1.png
index e1bcc27..e1bcc27 100644
--- a/img/basic-merging-1.jpg
+++ b/img/basic-merging-1.png
diff --git a/img/basic-merging-2.jpg b/img/basic-merging-2.png
index a243826..a243826 100644
--- a/img/basic-merging-2.jpg
+++ b/img/basic-merging-2.png