fix date formats for polycount.1-4

polycount/1/index.qmd

@@ -4,8 +4,8 @@ format:
   html:
     html-math-method: katex
 jupyter: python3
-date: "2021/02/03"
+date: "2021-02-03"
-date-modified: "2025/02/07"
+date-modified: "2025-02-07"
 categories:
   - algebra
   - phinary

polycount/2/index.qmd

@@ -3,8 +3,8 @@ title: "Polynomial Counting 2: Binary and beyond"
 format:
   html:
     html-math-method: katex
-date: "2021/02/05"
+date: "2021-02-05"
-date-modified: "2025/02/07"
+date-modified: "2025-02-07"
 categories:
   - algebra
   - binary

polycount/3/index.qmd

@@ -4,7 +4,7 @@ format:
   html:
     html-math-method: katex
 date: "2021-02-06"
-date-modified: "2021-02-08"
+date-modified: "2025-02-08"
 jupyter: python3
 categories:
   - algebra

polycount/4/index.qmd

@@ -3,8 +3,8 @@ title: "Polynomial Counting 4: Two 2's"
 format:
   html:
     html-math-method: katex
-date: "2021-02-09"
+date: "2021-02-06"
-date-modified: "2/12/2025"
+date-modified: "2025-02-12"
 jupyter: python3
 categories:
   - algebra