Fix typos and spelling errors in documentation (#1158)

* Update join.md

* Update design-best-practices.md

* Update recovery.md

Author: leopardracer

guide/daily-spending-wallet/backup-and-recovery/recovery.md

@@ -39,7 +39,7 @@ images_manual_recovery:
       caption: User selects \"advanced\" from the restore screen, and is taken here.
     - file: restore-manual-recovery-phrase-error
       modalImage: restore-manual-recovery-phrase-error-full
-      alt: Screen showing an incorrectly typed word highlighed in red.
+      alt: Screen showing an incorrectly typed word highlighted in red.
       caption: User enters their recovery phrase. The app can notify them if a word is incorrect before they have finished typing it.
     - file: restore-manual-recovery-phrase-progress
       modalImage: restore-manual-recovery-phrase-progress-full

guide/how-it-works/ecash/design-best-practices.md

@@ -333,7 +333,7 @@ Since ecash is still a relatively new technology this guide focuses on best prac
 ### User onboarding
 {% include image-gallery.html pages = page.images_onboarding %}
 
-It is recomended to start the onboarding process by explaining the risks associated with ecash and then guide the user through the process of joining their first mint or federation.
+It is recommended to start the onboarding process by explaining the risks associated with ecash and then guide the user through the process of joining their first mint or federation.
 
 #### Joining unknown mints or federations
 {% include image-gallery.html pages = page.images_unknown-mint %}

join.md

@@ -159,7 +159,7 @@ Depending on your skills and interest, you can help in a number of ways. We desi
 
 </div>
 
-If you are not familiar with the concepts of open design, we have a [great intro]({{ '/guide/getting-started/open-design/' | relative_url }}) for you. Open, public collaboration gives a lot of freedom to each participant and relies on us organically coming up with the organizational structures we want. The result is that things can sometimes look unorganized or unintuitive from the outside. The big benefit is that you can choose how you want to participate and can have a say in everthing.
+If you are not familiar with the concepts of open design, we have a [great intro]({{ '/guide/getting-started/open-design/' | relative_url }}) for you. Open, public collaboration gives a lot of freedom to each participant and relies on us organically coming up with the organizational structures we want. The result is that things can sometimes look unorganized or unintuitive from the outside. The big benefit is that you can choose how you want to participate and can have a say in everything.
 
 Some ways of contributing could be: