Adds row numbs to output

Also fixes table synax with line

Author: romellem

docs/2019/day/16.md

@@ -1,9 +1,9 @@
 ```
 var table = function(input) {
   let pad = String(input.length).length;
-  let space = ' '.padStart(pad) + ' ';
-  let header = space + `|   ${input.join('  |   ')}  |`;
-  let line = space + Array(header.length - space.length).fill('-').join('');
+  let space = '#'.padStart(pad);
+  let header = `| ${space} |   ${input.join('  |   ')}  |`;
+  let line = header.split('').map(c => c === '|' ? '|' : '-').join('');
   let grid = [];
 
   let mid = Math.floor(input.length / 2);
@@ -32,7 +32,7 @@ var table = function(input) {
       row.push(char);
     }
 
-    grid.push(`${(y+1).toString().padStart(pad)} | ${row.join(' | ')} |`);
+    grid.push(`| ${(y+1).toString().padStart(pad)} | ${row.join(' | ')} |`);
   }
 
   let output = [header, line, ...grid].join('\n');