g2h: Escape markdown code blocks that specify a non-word language

This is mostly a workaround for the early version of the file.md which had ```{{

1 files changed, 1 insertions, 0 deletions

diff --git a/src/g2h/file_page.py b/src/g2h/file_page.py
index f2e0550..c317454 100644
--- a/src/g2h/file_page.py
+++ b/src/g2h/file_page.py
@@ -40,6 +40,7 @@ class FilePage(Page):
         if file_type == 'text':
             if self.file_name.lower().endswith('.md'):
                 backtick_max = -1
+                content = re.sub(r'(`{3,}\W)', r'\\\1', content)
             else:
                 matches = re.findall('`+', content)
                 backtick_max = max(max(len(match) for match in matches) if matches else 0, backtick_max)