Add link to vendor prefixes MDN entry (vuejs#840)

andresgottlieb · kazupon · commit 5ee7cb78268f · 2017-03-23T11:58:33.000+09:00
Informative, since many people don't know what vendor prefixes are
diff --git a/src/v2/guide/class-and-style.md b/src/v2/guide/class-and-style.md
@@ -191,4 +191,4 @@ The array syntax for `v-bind:style` allows you to apply multiple style objects t
 
 ### Auto-prefixing
 
-When you use a CSS property that requires vendor prefixes in `v-bind:style`, for example `transform`, Vue will automatically detect and add appropriate prefixes to the applied styles.
+When you use a CSS property that requires [vendor prefixes](https://developer.mozilla.org/en-US/docs/Glossary/Vendor_Prefix) in `v-bind:style`, for example `transform`, Vue will automatically detect and add appropriate prefixes to the applied styles.

Original file line number	Diff line number	Diff line change
@@ -191,4 +191,4 @@ The array syntax for `v-bind:style` allows you to apply multiple style objects t
`191`	`191`
`192`	`192`	`### Auto-prefixing`
`193`	`193`
`194`		-When you use a CSS property that requires vendor prefixes in `v-bind:style`, for example `transform`, Vue will automatically detect and add appropriate prefixes to the applied styles.
	`194`	+When you use a CSS property that requires [vendor prefixes](https://developer.mozilla.org/en-US/docs/Glossary/Vendor_Prefix) in `v-bind:style`, for example `transform`, Vue will automatically detect and add appropriate prefixes to the applied styles.