Changed 'will gives' to 'will give'

Corrected typo for challenge Generate Random Whole Numbers with Javascript, 'will gives' to 'will give'.

challenges/01-front-end-development-certification/basic-javascript.json

@@ -4082,7 +4082,7 @@
       "description": [
         "It's great that we can generate random decimal numbers, but it's even more useful if we use it to generate random whole numbers.",
         "<ol><li>Use <code>Math.random()</code> to generate a random decimal.</li><li>Multiply that random decimal by <code>20</code>.</li><li>Use another function, <code>Math.floor()</code> to round the number down to its nearest whole number.</li></ol>",
-        "Remember that <code>Math.random()</code> can never quite return a <code>1</code> and, because we're rounding down, it's impossible to actually get <code>20</code>. This technique will gives us a whole number between <code>0</code> and <code>19</code>.",
+        "Remember that <code>Math.random()</code> can never quite return a <code>1</code> and, because we're rounding down, it's impossible to actually get <code>20</code>. This technique will give us a whole number between <code>0</code> and <code>19</code>.",
         "Putting everything together, this is what our code looks like:",
         "<code>Math.floor(Math.random() * 20);</code>",
         "We are calling <code>Math.random()</code>, multiplying the result by 20, then passing the value to <code>Math.floor()</code> function to round the value down to the nearest whole number.",