fix auto-added hashes

arc-mermaid.md

+```mermaid
+flowchart LR
+    Facultative-CAM-in-Talinum[Facultative-CAM-in-Talinum]
+    Facultative-CAM-in-Talinum-->Study:TalinumGenomeDraft
+    subgraph Study:TalinumGenomeDraft
+        TalinumGenomeDraft[TalinumGenomeDraft]
+    end
+    Facultative-CAM-in-Talinum-->Study:TalinumFacultativeCAM
+    subgraph Study:TalinumFacultativeCAM
+        plant_material[plant_material]
+    end
+    subgraph Assay:MassHunter_targets
+        mh-quant-results[mh-quant-results]
+        mh-quant-report[mh-quant-report]
+    end
+    subgraph Assay:Talinum_RNASeq_minimal
+        rna_extraction[rna_extraction]
+        illumina[illumina]
+    end
+    subgraph Assay:GCqTOF_targets
+        metabolite_extraction[metabolite_extraction]
+        gas_chromatography[gas_chromatography]
+        mass_spec[mass_spec]
+    end
+    plant_material-->|6|rna_extraction
+    plant_material-->|6|metabolite_extraction
+    mh-quant-results-->|1|mh-quant-report
+    rna_extraction-->|6|illumina
+    metabolite_extraction-->|6|gas_chromatography
+    gas_chromatography-->|20|mass_spec
+    mass_spec-->|20|mh-quant-results
+
+```