update projects api docs

Signed-off-by: Dmitriy Zaporozhets <dmitriy.zaporozhets@gmail.com>

doc/api/projects.md

@@ -2,7 +2,7 @@
 
 ### List projects
 
-Get a list of projects owned by the authenticated user.
+Get a list of projects acessed by the authenticated user.
 
 ```
 GET /projects
@@ -82,6 +82,22 @@ GET /projects
 ```
 
 
+#### List owned projects
+
+Get a list of projects owned by the authenticated user.
+
+```
+GET /projects/owned
+```
+
+#### List ALL projects
+
+Get a list of all GitLab projects (admin only).
+
+```
+GET /projects/all
+```
+
 ### Get single project
 
 Get a specific project, identified by project ID or NAMESPACE/PROJECT_NAME , which is owned by the authentication user.