Keep version detection sample in global & base

Author: Sainan

docs/Runtime Environment/Global & Base.md

@@ -8,6 +8,18 @@ This page documents the changes & additions to Pluto's runtime environment, whic
 ### `_PVERSION`
 `_PVERSION` is the global to check your current version of Pluto.
 
+```pluto
+if _PVERSION == nil then
+    print("Plain Lua detected (".._VERSION..")")
+else
+    io.write("Pluto detected (".._PVERSION.."), based on ".._VERSION)
+    if os.platform then
+        io.write(", running on "..os.platform)
+    end
+    io.write("\n")
+end
+```
+
 ---
 ### `package.path`
 `package.path` is modified to also search for `.pluto` files.

docs/Runtime Environment/OS.md

@@ -1,23 +1,11 @@
 This page documents the changes & additions to the `os` library in Pluto, which is built on top of Lua 5.4's.
 
+---
 ### `os.platform`
 `os.platform` is a global string containing the host platform. Can be "windows", "wasm", "linux", "macos", "android", or "unknown".
 
-```pluto
-if _PVERSION == nil then
-    print("Plain Lua detected (".._VERSION..")")
-else
-    io.write("Pluto detected (".._PVERSION.."), based on ".._VERSION)
-    if os.platform then
-        io.write(", running on "..os.platform)
-    end
-    io.write("\n")
-end
-```
-
 ---
 ### `os.arch`
-
 `os.arch` is a global string containing the host CPU architecture as well as the bit width, separated by a comma. For example, it would be `x86, 64-bit` for x86_64, `arm, 64-bit` for ARM64, and `wasm, 32-bit` for a typical WebAssembly environment.
 
 ---