fixed padding

package.json

@@ -1,7 +1,7 @@
 {
   "name": "bash-calendar",
   "description": "终端版万年历",
-  "version": "1.2.2",
+  "version": "1.2.3",
   "author": "yutent <yutent.io@gmail.com>",
   "bin": {
     "calendar": "index.js",

src/calendar.js

@@ -194,7 +194,7 @@ function drawTbody(year, month) {
           if (tmp.lunar) {
             pad = (10 - tmp.lunar.length * 2) / 2 - 2
           }
-          if (pad > 0) {
+          if (pad >= 0) {
             space = ' '.repeat(pad)
           } else {
             padSpace = padSpace.slice(0, pad)