fix internal links in entry index.html from 1984 thru 2012

2000/jarijyrki/README.md

@@ -141,14 +141,14 @@ Finish the formula with `!` to create the histogram.
 #### 2.2. Starting and Loading Spreadsheets
 
 To start the spreadsheet program with an existing
-spreadsheet, for instance [finance.sheet](finance.sheet), use the following
+spreadsheet, for instance [finance.sheet](%%REPO_URL%%/2000/jarijyrki/finance.sheet), use the following
 command line:
 
 ``` <!---sh-->
     ./jarijyrki < finance.sheet
 ```
 
-The file [finance.sheet](finance.sheet) has been provided as an example.  This
+The file [finance.sheet](%%REPO_URL%%/2000/jarijyrki/finance.sheet) has been provided as an example.  This
 file contains a set of financial numbers and two graphical entities - a pie
 chart and a histogram - based on them. We recommend starting the use of the
 program from this file, as a way to study and learn the formula language
@@ -184,7 +184,7 @@ Below the Formula Area is the Column Letters Area: `A`, `B`, and so on.
 Correspondingly, on the left side of the window is the Row Numbers Area: `1`, `2`,
 and so on.  The rest of the window is dedicated to the actual spreadsheet cells.
 
-The example spreadsheet, [finance.sheet](finance.sheet), provided with this
+The example spreadsheet, [finance.sheet](%%REPO_URL%%/2000/jarijyrki/finance.sheet), provided with this
 program contains two sets of numbers in the visible area of the spreadsheet. The
 top set of numbers forms the product-by-product turnover breakdown of an
 imaginary company. Below it is the yearly development of the company profits. On

2000/jarijyrki/index.html

@@ -226,10 +226,10 @@ character at the end of the formula; press backspace to delete the last one.</p>
 <p>Finish the formula with <code>!</code> to create the histogram.</p>
 <h4 id="starting-and-loading-spreadsheets">2.2. Starting and Loading Spreadsheets</h4>
 <p>To start the spreadsheet program with an existing
-spreadsheet, for instance <a href="finance.sheet">finance.sheet</a>, use the following
+spreadsheet, for instance <a href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/2000/jarijyrki/finance.sheet">finance.sheet</a>, use the following
 command line:</p>
 <pre><code>    ./jarijyrki &lt; finance.sheet</code></pre>
-<p>The file <a href="finance.sheet">finance.sheet</a> has been provided as an example. This
+<p>The file <a href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/2000/jarijyrki/finance.sheet">finance.sheet</a> has been provided as an example. This
 file contains a set of financial numbers and two graphical entities - a pie
 chart and a histogram - based on them. We recommend starting the use of the
 program from this file, as a way to study and learn the formula language
@@ -250,7 +250,7 @@ currently selected cell. The program starts with <code>A1</code> as being the cu
 Below the Formula Area is the Column Letters Area: <code>A</code>, <code>B</code>, and so on.
 Correspondingly, on the left side of the window is the Row Numbers Area: <code>1</code>, <code>2</code>,
 and so on. The rest of the window is dedicated to the actual spreadsheet cells.</p>
-<p>The example spreadsheet, <a href="finance.sheet">finance.sheet</a>, provided with this
+<p>The example spreadsheet, <a href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/2000/jarijyrki/finance.sheet">finance.sheet</a>, provided with this
 program contains two sets of numbers in the visible area of the spreadsheet. The
 top set of numbers forms the product-by-product turnover breakdown of an
 imaginary company. Below it is the yearly development of the company profits. On