[utils][commands] Fix install command documentation

Fixes #442

beat/web/utils/management/commands/install.py

@@ -32,12 +32,12 @@ Examples:
   To install advanced databases, formats, libraries, algorithms, toolchains,
   experiments and plotters:
 
-    $ manage.py install -v1 advanced
+    $ ./bin/django install -v1 advanced
 
   To install only test databases, formats, libraries, algorithms, toolchains,
   experiments and plotters:
 
-    $ manage.py install -v1 test
+    $ ./bin/django install -v1 test
 
   Note: If you need to specify your own path to the directories containing the
   databases, you could just create a simple JSON file as follows::
@@ -49,7 +49,7 @@ Examples:
 
   Then just use the previous script with the option ``--database-root-file``::
 
-      $ manage.py install -v1 --database-root-file=<file.json>
+      $ ./bin/django install -v1 --database-root-file=<file.json>
 
   By default, paths to the root of all databases are set to match the Idiap
   Research Institute filesystem organisation.