fix typo in header column name

pyrat-api-single-response.csv

@@ -1,2 +1,2 @@
-ID,Species,Sacrifice Reason,DOB,Line / Strain (Name),Mutation 1,Grade 1,Mother,Father,Mother: Mutation 1,Mother: Grade 1,Father: Mutation 1,Father: Grade 1
+ID,Species,Sacrifice reason,DOB,Line / Strain (Name),Mutation 1,Grade 1,Mother,Father,Mother: Mutation 1,Mother: Grade 1,Father: Mutation 1,Father: Grade 1
 ID-001,Mouse,Not usable age,2026-02-03,Line-A,Mut-A,het,ID-101,ID-100,Mut-A,het,,