fix(guide): simplify directory structure

guide/english/javascript/standard-objects/math/math-min/index.md

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+---
+title: Math Min
+---
+## Math Min
+
+The Math.min() function returns the smallest of zero or more numbers.
+
+You can pass it any number of arguments.
+
+```javascript
+Math.min(7, 2, 9, -6);
+// returns -6
+```
+
+#### More Information:
+[MDN](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Math/min)
+
+