Tags button build 404 url

[abelsromero]

Describe the bug
Project tags generate an URL (ie. http://{domain}/technology_types/java/) that does not exists.
For example the following project

Has Java tag which points to https://{domain}technology_types/java/.

To Reproduce
Steps to reproduce the behavior:

1. Add new project with content

---
Title: Eclipse Austen
license: Eclipse Public License 2.0
is_incubated: true
website: https://projects.eclipse.org/proposals/eclipse-austen
github: https://myrepo.com
technology_types: [Java]
---
A description.

2. Build preview accorfing to instructions in README (currently: npm install && hugo server --destination=public)
3. Go to http://localhost:1313/projects/
4. Click on the tag
5. 404 screen

Expected behavior
At least not to fail.

Screenshots
n/a

Desktop (please complete the following information):

• OS: Linux 5.11.14-1-MANJARO
• Browser: Firefox
• Version: 88.0 64bits

Smartphone (please complete the following information):
n/a

Additional context
https://asciidoc-wg.eclipse.org/technology_types/java/ also returns a 404.

[ahus1]

It seems that we need to add content (?) for each tag in the theme.

For now, consider not adding any tags for now for Eclipse Austen until this issue has been resolved as a workaround.

[autumnfound]

To have that page exist, you need to add a technology_types taxonomy to the config.toml file. Once added, it renders, but isn't perfect from my limited testing. You may need to tweak some stuff to get it just right

[abelsromero]

I don't think that we really need it, but the tags are nice. Maybe we can just remove the link.