Merge pull request #1211 from gidsg/patch-2

fix broken link to apache arrow

README.md

@@ -17,7 +17,7 @@ data or streaming updates via [Apache Arrow](https://arrow.apache.org/).
 
 ## Features
 
-- A fast, memory efficient streaming query engine, written in C++ and compiled to [WebAssembly](https://webassembly.org/), with read/write/stream support for [Apache Arrow]().
+- A fast, memory efficient streaming query engine, written in C++ and compiled to [WebAssembly](https://webassembly.org/), with read/write/stream support for [Apache Arrow](https://arrow.apache.org/).
 
 - A framework-agnostic query configuration UI component, based on [Web Components](https://www.webcomponents.org/), and a WebWorker and/or WebSocket data engine host for stable interactivity at high frequency.
 
@@ -51,4 +51,4 @@ data or streaming updates via [Apache Arrow](https://arrow.apache.org/).
 * [Conceptual Overview](https://perspective.finos.org/docs/md/concepts.html)
 * [Perspective API](https://github.com/finos/perspective/blob/master/packages/perspective/README.md)
 * [Perspective Viewer API](https://github.com/finos/perspective/blob/master/packages/perspective-viewer/README.md)
-* [Perspective Python API](https://perspective.finos.org/docs/obj/perspective-python.html)
+* [Perspective Python API](https://perspective.finos.org/docs/obj/perspective-python.html)