Update README.md

There was a mistake for some reason AFLOW was written in place of alexandria for the data sources. Fixed now.

README.md

@@ -113,7 +113,7 @@ configs:
 |---|---|
 | Materials | 69,117 |
 | Functional | r2SCAN |
-| Sources | AFLOW (agm), OQMD (oqmd-), Materials Project (mp-) |
+| Sources | Alexandria (agm), OQMD (oqmd-), Materials Project (mp-) |
 | Bader charge coverage | 86.2% (59,613 materials) |
 | Charge density grid | 15×15×15 (`default`) or adaptive (`adaptive-grid`) |
 | Unsmoothed charge density | `charge_density`, 65,960 materials |
@@ -123,7 +123,7 @@ configs:
 
 | Source | Materials |
 |---|---|
-| AFLOW (`agm*`) | 38,925 |
+| Alexandria (`agm*`) | 38,925 |
 | OQMD (`oqmd-*`) | 29,611 |
 | Materials Project (`mp-*`) | 581 |
 
@@ -206,7 +206,7 @@ density = np.asarray(row["charge_density"]).reshape(row["charge_density_grid_sha
 
 If you use this dataset, please cite the underlying databases:
 
-- **AFLOW**: Curtarolo et al., *Computational Materials Science* 58, 218–226 (2012)
+- **ALEXANDRIA**: Schmidt et al., *Science Advances* 7, 49 (2021)
 - **OQMD**: Saal et al., *JOM* 65, 1501–1509 (2013); Kirklin et al., *npj Computational Materials* 1, 15010 (2015)
 - **Materials Project**: Jain et al., *APL Materials* 1, 011002 (2013)
 - **Bader analysis**: Henkelman et al., *Computational Materials Science* 36, 354–360 (2006)