SOURCES: name the public PanCanAtlas artifacts, not the cluster path

Both HLA tables are published TCGA PanCanAtlas files; the filenames carry the
provenance and the internal staging root added nothing.

SOURCES.md

@@ -22,8 +22,8 @@ re-formatted from experimental data.
 | Clinical annotation | `meta/tcga_annotation_standardized.tsv` | disease/cancer_type/stage/therapy/response/OS/PFS/AE (covers 9,104 / 9,591) |
 | Read counts | `meta/readcount/tcga_read_counts.tsv` | per-BAM `Total_Reads` / `Aligned_Reads`, keyed by aliquot UUID |
 | GDC sample sheets | `meta/readcount/tcga_*_sample_sheet.tsv` | UUID → TCGA barcode (`Case ID`, `Sample ID`) |
-| HLA class-I (primary) | `(internal path)` | TCGA PanImmune A/B/C calls, donor-level (`patientBarcode`) — 8,507 donors |
-| HLA class-I (fill) | `(internal path)` | OptiType A/B/C per aliquot (`aliquot_id`); collapsed to donor, used only where PanImmune lacks the donor |
+| HLA class-I (primary) | TCGA PanCanAtlas PanImmune, `tcga_hla_alleles.tsv` | TCGA PanImmune A/B/C calls, donor-level (`patientBarcode`) — 8,507 donors |
+| HLA class-I (fill) | TCGA PanCanAtlas OptiType, `OptiTypeCallsHLA_20171207.tsv` | OptiType A/B/C per aliquot (`aliquot_id`); collapsed to donor, used only where PanImmune lacks the donor |
 
 ## Public origin