check: fix for searching image:, brut: in header

src/var/lib/tyto/program/check.py

@@ -535,7 +535,7 @@ def check_content(post_bottom):
         tag_id = line.rsplit(':', 1)[1].rsplit(' ')[0]
         htag = tag[1: len(tag)]
 
-        if not re.search(r'%s\s+\b%s\b|%s\b%s\b'%(
+        if not re.search(r'^%s\s+\b%s\b|%s\b%s\b'%(
                htag, tag_id, htag, tag_id
                ), article_header):
           tyto.exiting("10", "%s %s"%(htag, tag_id), True)