Prettify code, change ENV variable name

paperless.conf.example

@@ -83,5 +83,5 @@ PAPERLESS_SHARED_SECRET=""
 
 # You can specify where you want the SQLite database to be stored instead of 
 # the default location
-#PAPERLESS_DBLOCATION=/path/to/database/file
+#PAPERLESS_DBDIR=/path/to/database/file
 

src/paperless/settings.py

@@ -95,7 +95,13 @@ WSGI_APPLICATION = 'paperless.wsgi.application'
 DATABASES = {
     "default": {
         "ENGINE": "django.db.backends.sqlite3",
-        "NAME": os.path.join(os.getenv("PAPERLESS_DBLOCATION",os.path.join(BASE_DIR, "..", "data")), "db.sqlite3")
+        "NAME": os.path.join(
+                    os.getenv(
+                        "PAPERLESS_DBDIR",
+                        os.path.join(BASE_DIR, "..", "data")
+                    ),
+                    "db.sqlite3"
+                )
     }
 }