Changed wording on video links in readme

README.md

@@ -42,8 +42,8 @@ It is currently possible to use CadQuery for your own projects in 3 different wa
 * Using the [CQ-editor GUI](https:/CadQuery/CQ-editor)
 * From a [Jupyter notebook](https:/bernhard-42/jupyter-cadquery)
 * As a standalone library
- * Linux [instructional video](https://youtu.be/sjLTePOq8bQ)
- * Windows [instructional video](https://youtu.be/3Tg_RJhqZRg)
+ * Linux [installation video](https://youtu.be/sjLTePOq8bQ)
+ * Windows [installation video](https://youtu.be/3Tg_RJhqZRg)
 
 The easiest way to install CadQuery and its dependencies is using conda, which is included as part of an Anaconda/Miniconda installation. See the next section for an alternative to a full install of Anaconda that may be preferable to some users. The steps to install cadquery are as follows:
 ```