fix(curriculum): add switch statement spaces for consistency (#46141)

Co-authored-by: Huyen Nguyen <25715018+huyenltnguyen@users.noreply.github.com>

curriculum/challenges/english/02-javascript-algorithms-and-data-structures/basic-javascript/multiple-identical-options-in-switch-statements.md

@@ -13,7 +13,7 @@ If the `break` statement is omitted from a `switch` statement's `case`, the foll
 
 ```js
 let result = "";
-switch(val) {
+switch (val) {
   case 1:
   case 2:
   case 3:
@@ -127,7 +127,7 @@ sequentialSizes(1);
 function sequentialSizes(val) {
   let answer = "";
 
-  switch(val) {
+  switch (val) {
     case 1:
     case 2:
     case 3:

curriculum/challenges/english/02-javascript-algorithms-and-data-structures/basic-javascript/replacing-if-else-chains-with-switch.md

@@ -24,7 +24,7 @@ if (val === 1) {
 can be replaced with:
 
 ```js
-switch(val) {
+switch (val) {
   case 1:
     answer = "a";
     break;
@@ -136,7 +136,7 @@ chainToSwitch(7);
 function chainToSwitch(val) {
   let answer = "";
 
-  switch(val) {
+  switch (val) {
     case "bob":
       answer = "Marley";
       break;

curriculum/challenges/english/02-javascript-algorithms-and-data-structures/basic-javascript/selecting-from-many-options-with-switch-statements.md

@@ -14,7 +14,7 @@ If you have many options to choose from, use a <dfn>switch</dfn> statement. A `s
 Here is an example of a `switch` statement:
 
 ```js
-switch(lowercaseLetter) {
+switch (lowercaseLetter) {
   case "a":
     console.log("A");
     break;
@@ -96,7 +96,7 @@ caseInSwitch(1);
 function caseInSwitch(val) {
   let answer = "";
 
-  switch(val) {
+  switch (val) {
     case 1:
       answer = "alpha";
       break;