typos on webpage (#9)

* documentation: typo

cutting-hedge --> cutting-edge

* content: typo

cutting-hedge --> cutting-edge

educate.md

@@ -9,6 +9,6 @@ In particular, current *ContinualAI* efforts in this direction include:
 
 - [ContinualAI Wiki](https://wiki.continualai.org/): The aim of ContinualAI Wiki is to create an open-source, collaborative wiki to provide a starting point for researchers, developers and AI enthusiasts who share an interest in Continual Learning and are willing to learn more or contribute to this field.
 
-- [ContinualAI Medium Publication](https://medium.com/continual-ai): At Continual AI we value scientific dissemination. We think that to advance science it is important to promote cutting-hedge research and make it accessible to a larger audience of people. This is why we maintain a Medium Publication where we try to distill and simplify the continual learning ideas with as little technical details as possible. See the [projects](www.continualai.org/projects) page for more details.
+- [ContinualAI Medium Publication](https://medium.com/continual-ai): At Continual AI we value scientific dissemination. We think that to advance science it is important to promote cutting-edge research and make it accessible to a larger audience of people. This is why we maintain a Medium Publication where we try to distill and simplify the continual learning ideas with as little technical details as possible. See the [projects](www.continualai.org/projects) page for more details.
 
-- [ContinualAI Colab](https://github.com/ContinualAI/colab): a number of notebooks and scripts (for demo, showcasing & tutorials) which can be directly imported in Google Co-laboratory and are related to Continual Learning.
+- [ContinualAI Colab](https://github.com/ContinualAI/colab): a number of notebooks and scripts (for demo, showcasing & tutorials) which can be directly imported in Google Co-laboratory and are related to Continual Learning.

projects.md

@@ -50,7 +50,7 @@ Waiting for better AI tools for papers recommendation the ContinualAI community
 <a name="medium"></a>
 <h3 id="medium" style="margin-bottom:30px">Medium Publication</h3>
 
-At ContinualAI we value scientific dissemination. We think that to advance science it is important to promote cutting-hedge research and make it accessible to a larger audience of people. This is why we maintain a [Medium Publication](https://medium.com/continual-ai) where we try to distill and simplify the continual learning ideas with as little technical details as possible.
+At ContinualAI we value scientific dissemination. We think that to advance science it is important to promote cutting-edge research and make it accessible to a larger audience of people. This is why we maintain a [Medium Publication](https://medium.com/continual-ai) where we try to distill and simplify the continual learning ideas with as little technical details as possible.
 
 <a name="newsletter"></a>
 <h3 id="newsletter" style="margin-bottom:30px">Mailing list/Newsletter</h3>