docs: document TR2 game flow

data/tr1/ship/cfg/TR1X_gameflow.json5

@@ -1,7 +1,7 @@
 {
     // NOTE: bad changes to this file may result in crashes.
     // Lines starting with double slashes are comments and are ignored.
-    // Refer to https://github.com/LostArtefacts/TRX/blob/stable/docs/tr1/GAMEFLOW.md
+    // Refer to https://github.com/LostArtefacts/TRX/blob/stable/docs/GAME_FLOW.md
     // for usage.
 
     "main_menu_picture": "data/images/title.webp",

data/tr1/ship/cfg/TR1X_gameflow_ub.json5

@@ -1,7 +1,7 @@
 {
     // NOTE: bad changes to this file may result in crashes.
     // Lines starting with double slashes are comments and are ignored.
-    // Refer to https://github.com/LostArtefacts/TRX/blob/stable/docs/tr1/GAMEFLOW.md
+    // Refer to https://github.com/LostArtefacts/TRX/blob/stable/docs/GAME_FLOW.md
     // for usage.
 
     "main_menu_picture": "data/images/title_ub.webp",

data/tr1/ship/cfg/TR1X_strings.json5

@@ -170,7 +170,6 @@
                 "puzzle_1": {"name": "Machine Cog"},
             },
         },
-
     ],
 
     "objects": {

docs/CONTRIBUTING.md

@@ -175,7 +175,7 @@ from the relevant parties.
 We maintain a changelog for each project in the `CHANGELOG.md` files, recording
 any changes except internal modifications or refactors. New features and
 original bug fixes should also be documented in the `README.md`. If a change
-affects game flow behavior, be sure to update the `GAMEFLOW.md` accordingly.
+affects game flow behavior, be sure to update the `GAME_FLOW.md` accordingly.
 Likewise, changes to the console commands should update `COMMANDS.md`.