fix(guide): simplify directory structure

guide/english/javascript/conditional-ternary-operators/index.md

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+---
+title: Conditional Ternary Operators
+---
+## Conditional Ternary Operators
+### Basic usage
+The ternary operator is a compact way to write an if-else inside an expression.
+```js
+const thing = (condition) ? <if true> : <if false>;
+```
+E.g.
+```js
+const cappedInput = input > 50 ? 50 : input // this will cap the input at 50
+```
+### Else if
+You can also chain ternary operators, this way you will have an if-else if-else behaviour
+```js
+<first condition> ? <value if first true>
+: <second condition> ? <value if second is true>
+: <fallback value>
+```
+> **Pro tip**: As you see you can split the ternary operator on multiple lines
+E.g.
+```
+const wealth = housesOwned > 3 ? "rich" 
+             : housesOwned > 1 ? "nothing to complain"
+             : "poor"
+```