fix footer

docs/JOSS_paper/paper.md

@@ -7,10 +7,10 @@ tags:
   - chaotic systems
   - time-series forecasting
 authors:
-  - name: Robert A. Caulk Ph.D
+  - name: Robert A. Caulk
     orcid: 0000-0001-5618-8629
     affiliation: 1, 2 
-  - name: Elin Törnquist Ph.D
+  - name: Elin Törnquist
     orcid: 0000-0003-3289-8604
     affiliation: 1, 2
   - name: Matthias Voppichler 
@@ -201,11 +201,11 @@ However, `FreqAI` also benefits from `Freqtrade` docker distributions, and can b
 
 We would like to acknowledge various beta testers of `FreqAI`:
 
-- Longlong Yu (@lolongcovas)
+- Longlong Yu (lolongcovas)
-- Richárd Józsa (@richardjozsa)
+- Richárd Józsa (richardjozsa)
-- Juha Nykänen (@suikula)
+- Juha Nykänen (suikula)
-- Emre Suzen (@aemr3)
+- Emre Suzen (aemr3)
-- Salah Lamkadem (@ikonx)
+- Salah Lamkadem (ikonx)
 
 As well as various `Freqtrade` [developers](https://github.com/freqtrade/freqtrade/graphs/contributors) maintaining tangential, yet essential, modules.