Fix error caused by prettier

Prettier apparently breaks something but it also
reformats the equation labels in an annoying way.

.pre-commit-config.yaml

@@ -13,13 +13,6 @@ repos:
         args: [--allow-multiple-documents]
       - id: check-added-large-files
 
-  - repo: https://github.com/pre-commit/mirrors-prettier
-    rev: v4.0.0-alpha.8
-    hooks:
-      - id: prettier
-        files: \.(md|rst|toml|yml|yaml)
-        args: [--prose-wrap=preserve]
-
   - repo: https://github.com/astral-sh/ruff-pre-commit
     rev: v0.4.7
     hooks:

extra/mean_sq_deviations.md

@@ -86,11 +86,10 @@ Now differentiate with respect to $c$:
 $$
 
 \begin{equation}
-\frac{\partial SSE_c}{\partial c} = -2 \sum x_i + 2 n c \tag{dSSE_c}
+\frac{\partial SSE_c}{\partial c} = -2 \sum x_i + 2 n c \tag{dsse_c}
 \end{equation}
 
-$$
-(dsse_c)
+$$ (dsse_c)
 
 When equation {eq}`dsse_c` has value zero, we can be at a peak (the
 gradient is zero, but it's about to become negative) or a trough (the gradient

extra/slope_deviations.md

@@ -76,8 +76,7 @@ $$
 \frac{\partial SSE_s}{\partial s} = -2 \sum y_i x_i + 2 s \sum x_i^2
 \end{equation}
 
-$$
-(dsse_s)
+$$ (dsse_s)
 
 Find the zero(s) for equation {eq}`dsse_s`: