multiline code blocks in table don't render well

[timotheecour]

eg, in readme.md not sure what to put in place of:

| category | D | nim | 
| --- | --- | --- |
| try throw catch finally | <code>try{throw new Exception("bar");}<br>catch(Exception e) {writeln(e);}<br>finally {}<code>  | <code>try: raise newException(IOError, "test exception")<br>except IOError: (let e = (ref IOError)(getCurrentException()); echo e[])<br>finally: discard<code> |

EDIT: this works well: https://github.com/timotheecour/D_vs_nim/blob/dev/table_test.md but more cumbersome to type tables