docs: fix equation rendering in linalg.cholesky (#762)

Closes: #761

Author: kgryte

Diff for: src/array_api_stubs/_2022_12/linalg.py

@@ -6,7 +6,7 @@ def cholesky(x: array, /, *, upper: bool = False) -> array:
     r"""
     Returns the lower (upper) Cholesky decomposition of a complex Hermitian or real symmetric positive-definite matrix ``x``.
 
-    If ``x`` is real-valued, let :math:`\mathbb{K}` be the set of real numbers $\mathbb{R}$, and, if ``x`` is complex-valued, let $\mathbb{K}$ be the set of complex numbers $\mathbb{C}$.
+    If ``x`` is real-valued, let :math:`\mathbb{K}` be the set of real numbers :math:`\mathbb{R}`, and, if ``x`` is complex-valued, let :math:`\mathbb{K}` be the set of complex numbers :math:`\mathbb{C}`.
 
     The lower **Cholesky decomposition** of a complex Hermitian or real symmetric positive-definite matrix :math:`x \in\ \mathbb{K}^{n \times n}` is defined as
 

Diff for: src/array_api_stubs/_2023_12/linalg.py

@@ -33,7 +33,7 @@ def cholesky(x: array, /, *, upper: bool = False) -> array:
     r"""
     Returns the lower (upper) Cholesky decomposition of a complex Hermitian or real symmetric positive-definite matrix ``x``.
 
-    If ``x`` is real-valued, let :math:`\mathbb{K}` be the set of real numbers $\mathbb{R}$, and, if ``x`` is complex-valued, let $\mathbb{K}$ be the set of complex numbers $\mathbb{C}$.
+    If ``x`` is real-valued, let :math:`\mathbb{K}` be the set of real numbers :math:`\mathbb{R}`, and, if ``x`` is complex-valued, let :math:`\mathbb{K}` be the set of complex numbers :math:`\mathbb{C}`.
 
     The lower **Cholesky decomposition** of a complex Hermitian or real symmetric positive-definite matrix :math:`x \in\ \mathbb{K}^{n \times n}` is defined as
 

Diff for: src/array_api_stubs/_draft/linalg.py

@@ -33,7 +33,7 @@ def cholesky(x: array, /, *, upper: bool = False) -> array:
     r"""
     Returns the lower (upper) Cholesky decomposition of a complex Hermitian or real symmetric positive-definite matrix ``x``.
 
-    If ``x`` is real-valued, let :math:`\mathbb{K}` be the set of real numbers $\mathbb{R}$, and, if ``x`` is complex-valued, let $\mathbb{K}$ be the set of complex numbers $\mathbb{C}$.
+    If ``x`` is real-valued, let :math:`\mathbb{K}` be the set of real numbers :math:`\mathbb{R}`, and, if ``x`` is complex-valued, let :math:`\mathbb{K}` be the set of complex numbers :math:`\mathbb{C}`.
 
     The lower **Cholesky decomposition** of a complex Hermitian or real symmetric positive-definite matrix :math:`x \in\ \mathbb{K}^{n \times n}` is defined as