chore: remove self-closing tags (#617)

* remove self-closing tags in src

* self-closing tags

Author: Rich-Harris

content/tutorial/01-svelte/07-lifecycle/01-onmount/app-a/src/lib/App.svelte

@@ -5,7 +5,7 @@
 <canvas
 	width={32}
 	height={32}
-/>
+></canvas>
 
 <style>
 	canvas {

content/tutorial/01-svelte/07-lifecycle/01-onmount/app-b/src/lib/App.svelte

@@ -20,7 +20,7 @@
 <canvas
 	width={32}
 	height={32}
-/>
+></canvas>
 
 <style>
 	canvas {

content/tutorial/01-svelte/07-lifecycle/03-tick/app-a/src/lib/App.svelte

@@ -27,7 +27,7 @@
 <textarea
 	value={text}
 	on:keydown={handleKeydown}
-/>
+></textarea>
 
 <style>
 	textarea {

content/tutorial/01-svelte/07-lifecycle/03-tick/app-b/src/lib/App.svelte

@@ -29,7 +29,7 @@
 <textarea
 	value={text}
 	on:keydown={handleKeydown}
-/>
+></textarea>
 
 <style>
 	textarea {

content/tutorial/02-advanced-svelte/01-motion/01-tweens/app-a/src/lib/App.svelte

@@ -4,7 +4,7 @@
 	const progress = writable(0);
 </script>
 
-<progress value={$progress} />
+<progress value={$progress}></progress>
 
 <button on:click={() => progress.set(0)}>
 	0%

content/tutorial/02-advanced-svelte/01-motion/01-tweens/app-b/src/lib/App.svelte

@@ -8,7 +8,7 @@
 	});
 </script>
 
-<progress value={$progress} />
+<progress value={$progress}></progress>
 
 <button on:click={() => progress.set(0)}>
 	0%

content/tutorial/02-advanced-svelte/02-transitions/09-deferred-transitions/app-a/src/lib/TodoList.svelte

@@ -17,7 +17,7 @@
 
 				<span>{todo.description}</span>
 
-				<button on:click={() => store.remove(todo)} aria-label="Remove" />
+				<button on:click={() => store.remove(todo)} aria-label="Remove"></button>
 			</label>
 		</li>
 	{/each}

content/tutorial/02-advanced-svelte/02-transitions/09-deferred-transitions/app-b/src/lib/TodoList.svelte

@@ -21,7 +21,7 @@
 
 				<span>{todo.description}</span>
 
-				<button on:click={() => store.remove(todo)} aria-label="Remove" />
+				<button on:click={() => store.remove(todo)} aria-label="Remove"></button>
 			</label>
 		</li>
 	{/each}

content/tutorial/02-advanced-svelte/03-animations/01-animate/app-b/src/lib/TodoList.svelte

@@ -23,7 +23,7 @@
 
 				<span>{todo.description}</span>
 
-				<button on:click={() => store.remove(todo)} aria-label="Remove" />
+				<button on:click={() => store.remove(todo)} aria-label="Remove"></button>
 			</label>
 		</li>
 	{/each}

content/tutorial/02-advanced-svelte/04-actions/01-actions/app-a/src/lib/App.svelte

@@ -30,7 +30,7 @@
 							on:click={() => {
 								selected = color;
 							}}
-						/>
+						></button>
 					{/each}
 				</div>