Update citation link

Chris Erdmann · web-flow · commit b7e323f9a931 · 2019-09-07T16:03:00.000-04:00
diff --git a/README.md b/README.md
@@ -28,4 +28,4 @@ Library Carpentry is authored and maintained by the [community](https://github.c
 
 Please cite as:
 
-Library Carpentry. Data Intro for Archivists. June 2017. https://data-lessons.github.io/data-intro-archives/.
+Library Carpentry. Data Intro for Archivists. June 2017. https://librarycarpentry.org/lc-data-intro-archives/.

Original file line number	Diff line number	Diff line change
`@@ -28,4 +28,4 @@ Library Carpentry is authored and maintained by the [community](https://github.c`
`28`	`28`
`29`	`29`	`Please cite as:`
`30`	`30`
`31`		`-Library Carpentry. Data Intro for Archivists. June 2017. https://data-lessons.github.io/data-intro-archives/.`
	`31`	`+Library Carpentry. Data Intro for Archivists. June 2017. https://librarycarpentry.org/lc-data-intro-archives/.`