cleanup, docs

site/doc/pages/float_val.txt

@@ -15,7 +15,5 @@ Extracts a floating point number from a `String`.
 
 If no usable number can be identified, the result is `0`.
 
-## Related Concepts
-
-- PHP: `floatval()`
-- JavaScript / Node.js: `Number()` or `parseFloat()`
+:example
+print("float_val example\n");