Add missing link to README

lucaswerkmeister · lucaswerkmeister · commit b8d0796e7951 · 2020-06-05T12:30:36.000+02:00
diff --git a/README.md b/README.md
@@ -16,3 +16,5 @@ namespace '@wmde/wikibase-datamodel-types' {
 	}
 }
 ```
+
+[declaration merging]: https://www.typescriptlang.org/docs/handbook/declaration-merging.html

Original file line number	Diff line number	Diff line change
`@@ -16,3 +16,5 @@ namespace '@wmde/wikibase-datamodel-types' {`
`16`	`16`	`}`
`17`	`17`	`}`
`18`	`18`	```
	`19`	`+`
	`20`	`+[declaration merging]: https://www.typescriptlang.org/docs/handbook/declaration-merging.html`