improved indentation and whitespace for markdown code blocks

All code blocks in markdown have been intended by at least 4 spaces.

We add `--tab-stop=8` to all `pandoc(1)` executions in order to set
a better tab stop indentation, especially for tab intended code blocks.

Changed `bin/pandoc-wrapper.sh` VERSION from "1.5.3 2024-03-26"
to "1.6 2024-03-31".

Fixed `1991/brnstnd/sorta.README.md` so that the sorta code
is code blocks.

Removed unneeded paragraph group in copyright in `inc/footer.default.html`.

Fixed excess whitespace after list Author on entry `index.html` page.

Changed `bin/output-index-author.sh` VERSION from "1.5.2 2024-03-26"
to "1.6 2024-03-31".

Performed `make www` to perform the above and test under macOS.

TODO: Fix the problem of the initial line of code being extra intended.
TODO: Fix excess whitespace around code that is inline.

2014/maffiodo2/README.md

@@ -1,7 +1,7 @@
 ## To build:
 
 ```sh
-make
+    make
 ```
 
 There is a 121 byte version provided by the author. See [Alternate
@@ -13,7 +13,7 @@ code](#alternate-code) below.
 The current status of this entry is:
 
 ```
-STATUS: INABIAF - please **DO NOT** fix
+    STATUS: INABIAF - please **DO NOT** fix
 ```
 
 For more detailed information see [2014 maffiodo2 bugs](../../bugs.html#2014_maffiodo2).
@@ -22,14 +22,14 @@ For more detailed information see [2014 maffiodo2 bugs](../../bugs.html#2014_maf
 ## To use:
 
 ```sh
-./prog arg
+    ./prog arg
 ```
 
 
 ## Try:
 
 ```sh
-./try.sh
+    ./try.sh
 ```
 
 
@@ -42,14 +42,14 @@ as fun but it's 121 bytes instead of 140.
 ### Alternate build:
 
 ```sh
-make alt
+    make alt
 ```
 
 
 ### Alternate use:
 
 ```sh
-cat image.rgb | ./prog.alt
+    cat image.rgb | ./prog.alt
 ```
 
 
@@ -92,7 +92,7 @@ If you have a terminal geometry than is different from the common 80x25 you can
 modify the *output width* by changing the value of the first variable:
 
 ```c
-d=80,
+    d=80,
 ```
 
 ### Something to try
@@ -100,14 +100,14 @@ d=80,
 Type this:
 
 ```sh
-cat image.rgb | ./prog "  .:;Y0"
+    cat image.rgb | ./prog "  .:;Y0"
 ```
 
 You can use your own image. Convert the image to a raw RGB image. Using
 ImageMagick it's very simple:
 
 ```sh
-convert -geometry 80x source.jpg image.rgb
+    convert -geometry 80x source.jpg image.rgb
 ```
 
 This program require one parameter or it will crash. The parameter of the
@@ -117,10 +117,10 @@ program is the *conversion ramp*. You can use different ramps or create your own
 These are some ramps you can try:
 
 ```sh
-./prog " :1"
-./prog "  .:;Y0"
-./prog " .:-=+*#%@"
-./prog "   .,:!-iots&8%#@$"
+    ./prog " :1"
+    ./prog "  .:;Y0"
+    ./prog " .:-=+*#%@"
+    ./prog "   .,:!-iots&8%#@$"
 ```
 
 ### 121 byte version
@@ -128,7 +128,7 @@ These are some ramps you can try:
 An alternative version of this program is only 121bytes long:
 
 ```c
-d=80,e,j;g(){j+=getchar();}main(){for(;;){j=0;g();if(j<0)break;g(g());putchar(" .:#@"[j/3*5>>8]);if(!(++e%d))puts("");}}
+    d=80,e,j;g(){j+=getchar();}main(){for(;;){j=0;g();if(j<0)break;g(g());putchar(" .:#@"[j/3*5>>8]);if(!(++e%d))puts("");}}
 ```
 
 This alternative version has a **fixed ramp**. It's smaller but it's not so fun to use...