migrate Adj Close to Close

Author: mmcky

lectures/commod_price.md

@@ -60,7 +60,7 @@ The figure below shows the price of cotton in USD since the start of 2016.
 ```{code-cell} ipython3
 :tags: [hide-input, hide-output]
 
-s = yf.download('CT=F', '2016-1-1', '2023-4-1')['Adj Close']
+s = yf.download('CT=F', '2016-1-1', '2023-4-1')['Close']
 ```
 
 ```{code-cell} ipython3

lectures/heavy_tails.md

@@ -197,7 +197,7 @@ mystnb:
     caption: Daily Amazon returns
     name: dailyreturns-amzn
 ---
-s = data['Adj Close']
+s = data['Close']
 r = s.pct_change()
 
 fig, ax = plt.subplots()
@@ -229,7 +229,7 @@ mystnb:
     caption: Daily Bitcoin returns
     name: dailyreturns-btc
 ---
-s = data['Adj Close']
+s = data['Close']
 r = s.pct_change()
 
 fig, ax = plt.subplots()