Fix broken URLs for OTTR website (#724)

* fix broken links in PULL_REQUEST_TEMPLATE.md

* fix URL in images-checklist.md

* fix urls in templates-to-edit.md

.github/PULL_REQUEST_TEMPLATE.md

@@ -30,9 +30,9 @@
 
 - [ ] Any newly necessary packages that are needed have been added to the [Dockerfile and image](https://www.ottrproject.org/customize-docker.html).
 
-- [ ] Images are in the [correct format for rendering](https://www.ottrproject.org/writing_content.html#set-up-images).
+- [ ] Images are in the [correct format for rendering](https://www.ottrproject.org/writing_content_courses.html#set-up-images).
 
-- [ ] Every new image has [alt text and is in a Google Slide](https://www.ottrproject.org/writing_content.html#Accessibility).
+- [ ] Every new image has [alt text and is in a Google Slide](https://www.ottrproject.org/writing_content_courses.html#Accessibility).
 
 - [ ] Each slide is described in the notes of the slide so learners relying on a screen reader can access the content. See https://lastcallmedia.com/blog/accessible-comics for more guidance on this.
 

.github/automatic-issues/images-checklist.md

@@ -1,7 +1,7 @@
 
 Use this checklist to make sure your slides and images are set up correctly!
 
-See [Setting Up Images and Graphics](https://www.ottrproject.org/writing_content.html#set-up-images) for more info!
+See [Setting Up Images and Graphics](https://www.ottrproject.org/writing_content_courses.html#Set_up_images) for more info!
 
 - [ ] Create your course's main Google Slides.
 

.github/automatic-issues/templates-to-edit.md

@@ -1,5 +1,5 @@
 
-[Follow the instructions here in ottrproject.org](https://www.ottrproject.org/writing_content.html) for details on how to start editing your OTTR course
+[Follow the instructions here in ottrproject.org](https://www.ottrproject.org/writing_content_courses.html) for details on how to start editing your OTTR course
 
 The following files need to be edited to get this new course started!
 
@@ -12,7 +12,7 @@ The following files need to be edited to get this new course started!
 
 ### Files that need to be edited upon adding each new chapter (including upon creating a new course):
 
-- [ ] `_bookdown.yml` - The list of Rmd files that need to be rendered needs to be updated. See [instructions](https://www.ottrproject.org/examples.html#publishing-with-bookdown).
+- [ ] `_bookdown.yml` - The list of Rmd files that need to be rendered needs to be updated. See [instructions](https://www.ottrproject.org/course_publishing.html#publishing-with-bookdown).
 - [ ] `book.bib` - any citations need to be added. See [instructions](https://www.ottrproject.org/more_features.html#citing-sources).
 
 ### Picking a style
@@ -26,7 +26,7 @@ By default this course template will use the jhudsl data science lab style. Howe
 
 - [ ] On a new branch, copy the `style-sets/<set-name>/index.Rmd` and `style-sets/<set-name>/_output.yml` to the top of the repository to overwrite the default `index.Rmd` and `_output.yml`.
 - [ ] Copy over all the files in the `style-sets/<set-name>/copy-to-assets` to the `assets` folder in the top of the repository.
-- [ ] [Create a pull request](https://www.ottrproject.org/writing_content.html#Open_a_pull_request) with these changes, and double check the rendered preview to make sure that the style is what you are looking for.
+- [ ] [Create a pull request](https://www.ottrproject.org/writing_content_courses.html#Open_a_pull_request) with these changes, and double check the rendered preview to make sure that the style is what you are looking for.
 
 ### Files that need to be edited upon adding new packages that the book's code uses: