Convert example to exemplar

* Rename example files to exemplar

See exercism/docs#23

* [Docs] Correct .meta/example references to .meta/exemplar

* [Docs] Use exemplar instead of example

* [Docs] Update example name in file listings

* [Julia] Convert to exemplar.jl

* [elm] Rename .meta/Cook.elm to .meta/Examplar.elm

* [elm] Rename .meta/Examplar.elm .meta/Exemplar.elm

Co-authored-by: Matthieu Pizenberg <matthieu.pizenberg@gmail.com>

Author: 2 people

exercises/concept/bomb-defuser/.meta/Example.swift exercises/concept/bomb-defuser/.meta/Exemplar.swift

@@ -40,7 +40,7 @@ languages
                 ├── .meta
                 |   |── config.json
                 |   |── design.md
-                |   └── Example.swift
+                |   └── Exemplar.swift
                 ├── Package.swift
                 ├── Sources
                 |   └── <NAME>
@@ -98,13 +98,13 @@ For more information, please read [this in-depth description][tests-file], [watc
 
 This file will be generated by the Swift Package Manager, but it needs to be removed as it conflicts with a README.md file that will be generated for the student when they attempt the exercise.
 
-### Add `.meta/Example.swift` file
+### Add `.meta/Exemplar.swift` file
 
 **Purpose:** The idiomatic example implementation that passes all the tests.
 
 For more information, please read [this in-depth description][example-file], [watch this video][video-example-file] and check [this example file][example-example-file].
 
-Note that all of the above files except for .meta/Example.swift can be created automatically by running `swift package init --type library --<NAME>` inside the <SLUG> directory.
+Note that all of the above files except for .meta/Exemplar.swift can be created automatically by running `swift package init --type library --<NAME>` inside the <SLUG> directory.
 
 ## Step 2: Add documentation files
 
@@ -161,7 +161,7 @@ If you have any questions regarding implementing the exercise, please post them
 
 <!--[example-stub-file]: ../exercises/concept/strings/Source/Strings/Strings.swift
 [example-tests-file]: ../exercises/concept/strings/Tests/StringsTests/StringTests.swift
-[example-example-file]: ../exercises/concept/strings/.meta/Example.swift
+[example-example-file]: ../exercises/concept/strings/.meta/Exemplar.swift
 [example-project-file]: ../exercises/concept/strings/Package.swift
 -->