docs: Corrected environment file documentation

README.rst

@@ -148,8 +148,8 @@ declare them in the shell. The default location of the file is
 ``~/.squonk2/environments``. If you have multiple installations this
 allows you to keep all your environment settings together in one file.
 
-You can use an alternative file  by setting ``SQUONK2_ENVIRONMENT_FILE``,
-e.g. ``export SQUONK2_ENVIRONMENT_FILE=~/my-env'``
+You can use an alternative file  by setting ``SQUONK2_ENVIRONMENTS_FILE``,
+e.g. ``export SQUONK2_ENVIRONMENTS_FILE=~/my-env'``
 
 ..  code-block:: yaml
 
@@ -160,7 +160,7 @@ e.g. ``export SQUONK2_ENVIRONMENT_FILE=~/my-env'``
     # It provides all the connection details for one or more Squonk2 environments.
     # It is expected to be found in the user's home directory
     # as '~/.squonk2/environments' or the user can 'point' to it by setting
-    # 'SQUONK2_ENVIRONMENT_FILE', e.g. 'export SQUONK2_ENVIRONMENT_FILE=~/my-env'
+    # 'SQUONK2_ENVIRONMENTS_FILE', e.g. 'export SQUONK2_ENVIRONMENTS_FILE=~/my-env'
 
     # The 'environments' block defines one or more environments.
     # Each has a name. Here we define an environment called 'site-a'

src/squonk2/environment.py

@@ -24,7 +24,7 @@
 #
 # See the project's 'environments' file for an example of the content of the file.
 _ENVIRONMENT_DIRECTORY: str = "~/.squonk2"
-_ENVIRONMENT_FILE: str = os.environ.get(
+_ENVIRONMENTS_FILE: str = os.environ.get(
     "SQUONK2_ENVIRONMENTS_FILE", f"{_ENVIRONMENT_DIRECTORY}/environments"
 )
 
@@ -50,7 +50,9 @@ class Environment:
     """Loads the values from the environment file for the given environment."""
 
     # Location of the file
-    __environments_file: str = os.path.expandvars(os.path.expanduser(_ENVIRONMENT_FILE))
+    __environments_file: str = os.path.expandvars(
+        os.path.expanduser(_ENVIRONMENTS_FILE)
+    )
     # Dictionary-form of the entire file
     __environments_config: Dict[str, Any] = {}
     # List of names in the configuration