Merge pull request #11278 from ZDroid/patch-1

Change tense to imperative

less/type.less

@@ -210,7 +210,7 @@ dd {
 
 // Abbreviations and acronyms
 abbr[title],
-// Added data-* attribute to help out our tooltip plugin, per https://github.com/twbs/bootstrap/issues/5257
+// Add data-* attribute to help out our tooltip plugin, per https://github.com/twbs/bootstrap/issues/5257
 abbr[data-original-title] {
   cursor: help;
   border-bottom: 1px dotted @abbr-border-color;
@@ -238,7 +238,7 @@ blockquote {
     line-height: @line-height-base;
     color: @blockquote-small-color;
     &:before {
-      content: '\2014 \00A0';// EM DASH, NBSP
+      content: '\2014 \00A0'; // EM DASH, NBSP
     }
   }
 
@@ -259,7 +259,7 @@ blockquote {
         content: '';
       }
       &:after {
-        content: '\00A0 \2014';// NBSP, EM DASH
+        content: '\00A0 \2014'; // NBSP, EM DASH
       }
     }
   }