fix: update example code formatting in README generation to include shell code block for improved readability

Author: mike-rambil

scripts/generate-readme.js

@@ -97,7 +97,7 @@ function renderExamples(examples) {
   if (!examples || !examples.length) return '';
   let out = '';
   examples.forEach((ex) => {
-    out += `- **${ex.description || ''}**\n\n${ex.code}\n`;
+    out += `- **${ex.description || ''}**\n\n\`\`\`sh\n${ex.code}\`\`\`\n`;
   });
   return renderSection('Examples', out);
 }

toc-source.json

@@ -57,7 +57,7 @@
         "command": "git request-pull <start> <url> <end>",
         "examples": [
           {
-            "code": "\n\n```The following changes since commit 1234567... (main):\n\n  Some previous commit message\n\nare available in the Git repository at:\n\n  https://github.com/example/repo.git feature-branch\n\nfor you to fetch changes up to 89abcde... (feature-branch):\n\n  New feature commit message\n  Another commit message\n\n----------------------------------------------------------------\n file1.txt | 10 ++++++++++\n file2.js  |  5 +++++\n 2 files changed, 15 insertions(+)\n```",
+            "code": "\n\nThe following changes since commit 1234567... (main):\n\n  Some previous commit message\n\nare available in the Git repository at:\n\n  https://github.com/example/repo.git feature-branch\n\nfor you to fetch changes up to 89abcde... (feature-branch):\n\n  New feature commit message\n  Another commit message\n\n----------------------------------------------------------------\n file1.txt | 10 ++++++++++\n file2.js  |  5 +++++\n 2 files changed, 15 insertions(+)\n",
             "description": "Generates a summary like:"
           },
           {