fix indentation

tasks/install.yml

@@ -7,12 +7,12 @@
   when: not certbot_user == 'root'
 
 - block:
-  - name: Install certbot with pip
-    pip:
-      name: "{{ item }}"
-      executable: pip3
-      extra_args: --user
-    loop: "{{ certbot_packages_extra + __certbot_packages }}"
+    - name: Install certbot with pip
+      pip:
+        name: "{{ item }}"
+        executable: pip3
+        extra_args: --user
+      loop: "{{ certbot_packages_extra + __certbot_packages }}"
 
     - name: Create certbot environment
       file: