doc(CategoryTheory/Triangulated/Yoneda): Add stacks tag 0149 (#36766)

Co-authored-by: Joël Riou <37772949+joelriou@users.noreply.github.com>

Author: justus-springer

Mathlib/CategoryTheory/Triangulated/Yoneda.lean

@@ -39,13 +39,15 @@ section
 variable [HasZeroObject C] [∀ (n : ℤ), (shiftFunctor C n).Additive]
   [Pretriangulated C]
 
+@[stacks 0149]
 instance (A : Cᵒᵖ) : (preadditiveCoyoneda.obj A).IsHomological where
   exact T hT := by
     rw [ShortComplex.ab_exact_iff]
     intro (x₂ : A.unop ⟶ T.obj₂) (hx₂ : x₂ ≫ T.mor₂ = 0)
     obtain ⟨x₁, hx₁⟩ := T.coyoneda_exact₂ hT x₂ hx₂
     exact ⟨x₁, hx₁.symm⟩
 
+@[stacks 0149]
 instance (B : C) : (preadditiveYoneda.obj B).IsHomological where
   exact T hT := by
     rw [ShortComplex.ab_exact_iff]