Update solution.md

Author: leviding

2-ui/1-document/07-modifying-document/9-calendar-table/solution.md

@@ -3,7 +3,7 @@ We'll create the table as a string: `"<table>...</table>"`, and then assign it t
 The algorithm:
 
 1. Create the table header with `<th>` and weekday names.
-1. Create the date object `d = new Date(year, month-1)`. That's the first day of `month` (taking into account that months in JavaScript start from `0`, not `1`).
-2. First few cells till the first day of the month `d.getDay()` may be empty. Let's fill them in with `<td></td>`.
-3. Increase the day in `d`: `d.setDate(d.getDate()+1)`. If `d.getMonth()` is not yet the next month, then add the new cell `<td>` to the calendar. If that's a Sunday, then add a newline <code>"&lt;/tr&gt;&lt;tr&gt;"</code>.
-4. If the month has finished, but the table row is not yet full, add empty `<td>` into it, to make it square.
+2. Create the date object `d = new Date(year, month-1)`. That's the first day of `month` (taking into account that months in JavaScript start from `0`, not `1`).
+3. First few cells till the first day of the month `d.getDay()` may be empty. Let's fill them in with `<td></td>`.
+4. Increase the day in `d`: `d.setDate(d.getDate()+1)`. If `d.getMonth()` is not yet the next month, then add the new cell `<td>` to the calendar. If that's a Sunday, then add a newline <code>"&lt;/tr&gt;&lt;tr&gt;"</code>.
+5. If the month has finished, but the table row is not yet full, add empty `<td>` into it, to make it square.