docs: format tables in data/README.md

Author: hkevin01

data/README.md

@@ -105,4 +105,4 @@ When adding new datasets:
 - All simulation parameters use reduced units unless otherwise specified
 - Temperature is given in units of kT (thermal energy)
 - Distances are in units of particle diameter
-- Time is in units of τ = σ√(m/ε) for Lennard-Jones systems
+- Time is in units of τ = σ√(m/ε) for Lennard-Jones systems