fix(guide) add stubs, update spellings and prepare for move (#36531)

* fix(guide) add stubs and correct file path misspellings and pr… (#36528)

* fix: corrected file path to match curriculum

* fix: renamed to newer challenge name

* fix: added solutions to articles from challenge files

* fix: added missing .english to file name

* fix: added missing title to guide article

* fix: correct solution for guide article

* fix: replaced stub with hint

* fix: added space in Hint headers

* fix: added solution to guide article

* fix: added solution to guide article

* test: replaced stub with hint and solution

* fix: add Problem number: to title

* fix: changed generatorexponential to correct name

* fix: renamed knight's tour to knights-tour

* fix: updated guide article

guide/english/certifications/coding-interview-prep/rosetta-code/least-common-multiple/index.md

@@ -0,0 +1,23 @@
+---
+title: Least common multiple
+---
+# Least common multiple
+
+---
+## Solutions
+
+<details><summary>Solution 1 (Click to Show/Hide)</summary>
+
+```javascript
+function LCM (A) {
+    var n = A.length, a = Math.abs(A[0]);
+    for (var i = 1; i < n; i++)
+     { var b = Math.abs(A[i]), c = a;
+       while (a && b){ a > b ? a %= b : b %= a; }
+       a = Math.abs(c*A[i])/(a+b);
+     }
+    return a;
+}
+```
+
+</details>