fix(posts): fix 404 links

* At _site/blog/2020/08/26/python-iterate-csv-rows/index.html:175:

  External link https://pandas.pydata.org/pandas-docs/stable/reference/api/pandas.read_csv.html#pandas-read-csv failed (status code 404)

* At _site/blog/2020/08/26/python-iterate-csv-rows/index.html:175:

  External link https://pandas.pydata.org/pandas-docs/stable/reference/api/pandas.DataFrame.iterrows.html#pandas-dataframe-iterrows failed (status code 404)

* At _site/blog/2021/04/25/mac-java-command-line-tool-jdk/index.html:155:

  External link https://www.java.com/en/download/apple.jsp failed (status code 404)

Author: remarkablemark

_posts/2020/2020-08-26-python-iterate-csv-rows.md

@@ -51,7 +51,7 @@ Install [pandas](https://pypi.org/project/pandas/):
 pip install pandas
 ```
 
-Using [`pandas.read_csv`](https://pandas.pydata.org/pandas-docs/stable/reference/api/pandas.read_csv.html#pandas-read-csv) and [`pandas.DataFrame.iterrows`](https://pandas.pydata.org/pandas-docs/stable/reference/api/pandas.DataFrame.iterrows.html#pandas-dataframe-iterrows):
+Using `pandas.read_csv` and `pandas.DataFrame.iterrows`:
 
 ```py
 import pandas as pd

_posts/2021/2021-04-25-mac-java-command-line-tool-jdk.md

@@ -30,7 +30,7 @@ To use the "java" command-line tool you need to install a JDK.
 
 ## Solution
 
-Install [Java](https://www.java.com/en/download/apple.jsp) with [Homebrew](https://brew.sh/):
+Install [Java](https://www.java.com/) with [Homebrew](https://brew.sh/):
 
 ```sh
 brew install java