Typo and grammer fix

Noticed there two typos in the nav styles comment.
Also fixed some punctuation and other small edits
for grammer and readability.

library/less/_base.less

@@ -179,10 +179,10 @@ h5, .h5 {
 
 /*
 all navs have a .nav class applied via
-the wp_menu function, this is so we can
-easily just write on group of styles for
-the navs on the site and our css is cleaner
-and moe scalable.
+the wp_menu function; this is so we can
+easily write one group of styles for
+the navs on the site so our css is cleaner
+and more scalable.
 */
 
 .nav {

library/scss/_base.scss

@@ -160,10 +160,10 @@ NAVIGATION STYLES
 
 /*
 all navs have a .nav class applied via
-the wp_menu function, this is so we can
-easily just write on group of styles for
-the navs on the site and our css is cleaner
-and moe scalable.
+the wp_menu function; this is so we can
+easily write one group of styles for
+the navs on the site so our css is cleaner
+and more scalable.
 */
 
 .nav {