card: drop em-dashes from prose

README.md

@@ -23,7 +23,7 @@ Two artifact lines, one knowledge base (snapshot `gpt51_270226`,
 
 | File | What it is |
 | --- | --- |
-| `gptkb_v2.0.1_rdf.nt.gz` | **Simplified RDF export — use this one.** |
+| `gptkb_v2.0.1_rdf.nt.gz` | **Simplified RDF export. Use this one.** |
 | `gptkb_v2.0.1_full_record/` | **The full six-term record**, as Parquet. |
 | `gptkb_v2.0_rdf.nt.gz` | Superseded interim RDF export, kept for citability. |
 
@@ -54,12 +54,12 @@ The vocabulary is deliberately three predicates and no more:
 | `rdfs:label` | the canonical name of an entity, predicate or concept |
 | `skos:altLabel` | **every surface form** observed for an entity |
 
-Literals are plain RDF strings — typed literals (`xsd:date`,
+Literals are plain RDF strings; typed literals (`xsd:date`,
 `xsd:integer`) are deferred. Concepts carry no `rdfs:subClassOf`: the
 source has no hierarchy to export.
 
 **v2.0.1 vs the interim v2.0 file.** Same knowledge base, same
-snapshot — the difference is how much of it the pipeline had
+snapshot: the difference is how much of it the pipeline had
 disambiguated at export time. The interim file was cut when roughly
 half of the named-entity objects had been resolved to entity IDs;
 facts whose object was still unresolved could mint no IRI and were
@@ -74,7 +74,7 @@ carries 168 `skos:altLabel` surface forms where the interim file had
 ### Loading
 
 ```bash
-# Virtuoso, QLever, Jena, rdflib — anything that reads N-Triples
+# Virtuoso, QLever, Jena, rdflib: anything that reads N-Triples
 gunzip -c gptkb_v2.0.1_rdf.nt.gz | head
 ```
 
@@ -86,7 +86,7 @@ IRIs the file already carries.
 A fact in GPTKB v2 has **six** terms, not three: alongside the
 disambiguated subject, predicate and object, it records the *wording*
 each was stated with, and the provenance of how that wording was
-resolved. A triple has nowhere to put either — in the RDF export,
+resolved. A triple has nowhere to put either. In the RDF export,
 `<E0> <P0> <C0>` appears five times because five differently worded
 facts about Vannevar Bush resolve to it, and RDF set semantics keep
 one. That collapse is the entire difference between the `.nt` file's
@@ -108,7 +108,7 @@ pipeline status and batch id intact.
 
 Surface-form variation is preserved as distinct rows: "John Smith,
 bornIn, NYC" and "Jane Smith, bornIn, Big Apple" are two rows even
-when both objects resolve to the same `E…` id — the wording is the
+when both objects resolve to the same `E…` id. The wording is the
 disambiguation evidence, and it is the point of the project.
 
 ### Loading