Fixed spelling errors, omissions, code typos (#34145)

Added missing regex tags at the end, fixed variable name, and erased an unnecessary space at the end of some of the test strings.

guide/english/certifications/javascript-algorithms-and-data-structures/regular-expressions/reuse-patterns-using-capture-groups/index.md

@@ -6,7 +6,7 @@ title: Reuse Patterns Using Capture Groups
 ## Hint 1:
 Given code below:
 ```javascript
-let testString = "test test test ";
+let testString = "test test test";
 let reRegex =/(test)\s\1/;
 let result = reRegex.test(testString);
 ```
@@ -18,16 +18,16 @@ If we were to literally translate the regex, it would look something like this:
 let re = /(test)\s\1/;
 let literalRe = /test\stest/;
 ```
-Both `rea` and `literalRe` would match the same thing.
+Both `re` and `literalRe` would match the same thing.
 
 ## Hint 2:
 Given the code below:
 ```javascript
-let testString = "test test test ";
+let testString = "test test test";
 let reRegex =/(test)(\s)\1\2\1/;
 let result = reRegex.test(testString);
 ```
-will match whole `test test test` because:
+`result` will match whole `test test test` because:
 `\1` repeats (test)
 `\2` repeats (\s)