docs: fix scrolling on site markdown pages

Author: hperrin

packages/site/src/routes/INSTALL.md/+page.svelte

@@ -9,3 +9,9 @@
 <script lang="ts">
   import Install from '../../../../../INSTALL.md';
 </script>
+
+<style>
+  .markdown :global(pre.highlight) {
+    overflow-x: auto;
+  }
+</style>

packages/site/src/routes/MIGRATING.md/+page.svelte

@@ -9,3 +9,9 @@
 <script lang="ts">
   import Migrating from '../../../../../MIGRATING.md';
 </script>
+
+<style>
+  .markdown :global(pre.highlight) {
+    overflow-x: auto;
+  }
+</style>

packages/site/src/routes/REPL.md/+page.svelte

@@ -9,3 +9,9 @@
 <script lang="ts">
   import Repl from '../../../../../REPL.md';
 </script>
+
+<style>
+  .markdown :global(pre.highlight) {
+    overflow-x: auto;
+  }
+</style>

packages/site/src/routes/SVELTEKIT.md/+page.svelte

@@ -9,3 +9,9 @@
 <script lang="ts">
   import SvelteKit from '../../../../../SVELTEKIT.md';
 </script>
+
+<style>
+  .markdown :global(pre.highlight) {
+    overflow-x: auto;
+  }
+</style>

packages/site/src/routes/THEMING.md/+page.svelte

@@ -9,3 +9,9 @@
 <script lang="ts">
   import Theming from '../../../../../THEMING.md';
 </script>
+
+<style>
+  .markdown :global(pre.highlight) {
+    overflow-x: auto;
+  }
+</style>

packages/site/src/routes/TYPOGRAPHY.md/+page.svelte

@@ -9,3 +9,9 @@
 <script lang="ts">
   import Typography from '../../../../../TYPOGRAPHY.md';
 </script>
+
+<style>
+  .markdown :global(pre.highlight) {
+    overflow-x: auto;
+  }
+</style>