DOC: fix folder tree

Signed-off-by: Raphael Defosseux <raphael.defosseux@eurecom.fr>

README.md

@@ -59,14 +59,15 @@ The OpenAirInterface CN UDM software is composed of the following parts:
 
 <pre>
 openair-cn5g-udm
-├── 3gpp-specs:     Directory containing 3GPP specification files (YAML) used to implement UDM network function. 
 ├── build:          Build directory, contains targets and object files generated by compilation of network functions. 
     ├── log:        Directory containing build log files.
     ├── scripts:    Directory containing scripts for building network functions.
     └── udm:        Directory containing CMakefile.txt and object files generated by compilation of UDM network function. 
 ├── ci-scripts:     Directory containing the script files for CI framework.
 ├── docs:           Directory containing the documentation files.
+├── docker:         Directory containing the DockerFiles to build images.
 ├── etc:            Directory containing the configuration file to be deployed for UDM.
+├── scripts:        Directory containing some scripts.
 └── src:            Source files of UDM.
     ├── 5gaka:      Security algorimth implementation.
     ├── api-server: UDM services APIs.