Fix spell errors (#30480)

Author: fengT-T

manual/en/optimize-lots-of-objects-animated.html

@@ -71,7 +71,7 @@ <h1>Optimize Lots of Objects Animated</h1>
 it's not important really. The important part is showing different sets
 of data.</p>
 <p>Let's generate 2 more sets of data. One being the places where the number
-men are greater than the number of women and visa versa, the places where
+men are greater than the number of women and vice versa, the places where
 the number of women are greater than the number of men. </p>
 <p>The first thing let's write a function that given a 2 dimensional array
 of arrays like we had before will map over it to generate a new 2 dimensional
@@ -489,4 +489,4 @@ <h1>Optimize Lots of Objects Animated</h1>
 
 
 
-</body></html>
+</body></html>