Align markdown filenames with their respective permalinks

This update JSON / Python file names following https://github.com/endoflife-date/endoflife.date/pull/7369.

releases/antix-linux.json

@@ -0,0 +1,29 @@
+{
+  "releases": {},
+  "versions": {
+    "8.5": {
+      "name": "8.5",
+      "date": "2010-04-13"
+    },
+    "8.2": {
+      "name": "8.2",
+      "date": "2009-07-24"
+    },
+    "7.5": {
+      "name": "7.5",
+      "date": "2008-08-24"
+    },
+    "7.2": {
+      "name": "7.2",
+      "date": "2008-05-16"
+    },
+    "7.0": {
+      "name": "7.0",
+      "date": "2007-10-30"
+    },
+    "6.5": {
+      "name": "6.5",
+      "date": "2007-07-09"
+    }
+  }
+}