Fixing lists concept typos (#2768)

* Fixing lists concept typos

* Fixing typo on variable name as well

concepts/lists/about.md

@@ -1,7 +1,7 @@
 # About Lists
 
 **Lists** are the ordered sequence collection in Java.
-Unlike arrays, a [`List`](https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/util/List.html) can grow in size to accomodate any number of items.
+Unlike arrays, a [`List`](https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/util/List.html) can grow in size to accommodate any number of items.
 One standard implementation is the `ArrayList` which is backed by a re-sizable array.
 Another standard implementation is the `LinkedList` class which is backed by a doubly-linked list.
 
@@ -13,7 +13,7 @@ For example:
 List<String> emptyListOfStrings = List.of();
 List<Integer> singleInteger = List.of(1);
 List<Boolean> threeBooleans = List.of(true, false, true);
-List<Object> listWithMulitipleTypes = List.of("hello", 1, true);
+List<Object> listWithMultipleTypes = List.of("hello", 1, true);
 ```
 
 `List`s have various helpful methods to add, remove, get, and check for an element to be present:

concepts/lists/introduction.md

@@ -1,7 +1,7 @@
 # Introduction to Lists
 
 **Lists** are the ordered sequence collection in Java.
-Unlike arrays, a [`List`](https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/util/List.html) can grow in size to accomodate any number of items.
+Unlike arrays, a [`List`](https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/util/List.html) can grow in size to accommodate any number of items.
 One standard implementation is the `ArrayList` which is backed by a re-sizable array.
 Another standard implementation is the `LinkedList` class which is backed by a doubly-linked list.
 
@@ -13,7 +13,7 @@ For example:
 List<String> emptyListOfStrings = List.of();
 List<Integer> singleInteger = List.of(1);
 List<Boolean> threeBooleans = List.of(true, false, true);
-List<Object> listWithMulitipleTypes = List.of("hello", 1, true);
+List<Object> listWithMultipleTypes = List.of("hello", 1, true);
 ```
 
 `List`s have various helpful methods to add, remove, get, and check for an element to be present:

exercises/concept/karls-languages/.docs/introduction.md

@@ -68,7 +68,7 @@ For example:
 List<String> emptyListOfStrings = List.of();
 List<Integer> singleInteger = List.of(1);
 List<Boolean> threeBooleans = List.of(true, false, true);
-List<Object> listWithMulitipleTypes = List.of("hello", 1, true);
+List<Object> listWithMultipleTypes = List.of("hello", 1, true);
 ```
 
 `List`s have various helpful methods to add, remove, get, and check for an element to be present: