pop main logic out one level by reversing condition

build/validate_format.rb

@@ -31,9 +31,9 @@ end
 
 File.foreach(filename).with_index do | line, line_num |
     line_num += 1
-    if line.start_with?('|')
-        # Skip table schema lines
-        if line.eql? "|---|---|---|---|---|\n"
+        
+    # Skip non-markdown table lines and table schema lines
+    if !line.start_with?('|') || line.eql?("|---|---|---|---|---|\n")
         next
     end
 
@@ -80,7 +80,6 @@ File.foreach(filename).with_index do | line, line_num |
         add_error(line_num, INDEX_LINK, "format should be \"[Go!](<LINK>)\": #{link_val}")
     end
 end
-end
 $errors.each do | e |
     puts e
 end