Mass fixes to headers in README.md files

There were many many README.md files with the wrong heading level for
different sections. These have been changed.

To help go through the changes it should be noted I used sgit and also
here is what is changed:

The 'Try', 'To build' and 'To run' lines have two '#'s. Some had one and
others had three.

An exception is that in 1984/anonymous/README.md for the alternative
code that had three '#'s. This is not consistent yet and it might be
that only two are desired. But for now that one at least has three.

2020/burton/README.md

@@ -10,7 +10,7 @@ Twitter: @lv2jmp
 make
 ```
 
-### To run:
+## To run:
 
 ```sh
 ./prog arg ...
@@ -18,7 +18,7 @@ make
 
 NOTE: this entry will dump core if you do not specify an argument.
 
-### Try:
+## Try:
 
 ```sh
 ./prog 128

2020/carlini/README.md

@@ -9,13 +9,13 @@ Nicholas Carlini <nicholas@carlini.com>
 make
 ```
 
-### To run:
+## To run:
 
 ```sh
 ./prog
 ```
 
-### Try:
+## Try:
 
 ```sh
 # Play with a friend, P1 and P2, squares are numbered 1..9

2020/endoh1/README.md

@@ -9,13 +9,13 @@ Twitter: @mametter
 make
 ```
 
-### To run:
+## To run:
 
 ```sh
 ./prog
 ```
 
-### Try:
+## Try:
 
 ```sh
 

2020/endoh2/README.md

@@ -3,19 +3,19 @@
 Yusuke Endoh  
 Twitter: @mametter  
 
-# To build:
+## To build:
 
 ```sh
 make
 ```
 
-### To run:
+## To run:
 
 ```sh
 ./prog
 ```
 
-### Try:
+## Try:
 
 ```sh
 ./prog

2020/endoh3/README.md

@@ -9,13 +9,13 @@ Twitter: @mametter
 make
 ```
 
-### To run:
+## To run:
 
 ```sh
 ./prog
 ```
 
-### Try:
+## Try:
 
 ```sh
 ./run_clock

2020/ferguson1/README.md

@@ -11,7 +11,7 @@ Mastodon: [@xexyl@fosstodon.org](https://fosstodon.org/@xexyl)
 make
 ```
 
-### To run:
+## To run:
 
 ```sh
 WAIT=N WALLS=[01] EVADE=N SIZE=N MAXSIZE=N GROW=N SHEDS=N SHED=N CANNIBAL=[01] ./prog

2020/ferguson2/README.md

@@ -12,7 +12,7 @@ Mastodon: [@xexyl@fosstodon.org](https://fosstodon.org/@xexyl)
 make
 ```
 
-### To run:
+## To run:
 
 ```sh
 ./prog  
@@ -48,7 +48,7 @@ make
 
 **NOTE**: in recode no spaces between options and option arguments are allowed.
 
-### Try:
+## Try:
 
 ```sh
 # IOCCC obfuscated!  

2020/giles/README.md

@@ -9,13 +9,13 @@ Edward Giles
 make
 ```
 
-### To run:
+## To run:
 
 ```sh
 ./prog
 ```
 
-### Try:
+## Try:
 
 ```sh
 ./prog < pi.wav

2020/kurdyukov1/README.md

@@ -10,13 +10,13 @@ Twitter: @ilyakurdyukov
 make
 ```
 
-### To run:
+## To run:
 
 ```sh
 ./prog
 ```
 
-### Try:
+## Try:
 
 ```sh
 echo IOCCC | ./prog

2020/kurdyukov2/README.md

@@ -10,13 +10,13 @@ Twitter: @ilyakurdyukov
 make
 ```
 
-### To run:
+## To run:
 
 ```sh
 ./prog
 ```
 
-### Try:
+## Try:
 
 ```sh
 # Take a selfie

2020/kurdyukov3/README.md

@@ -10,13 +10,13 @@ Twitter: @ilyakurdyukov
 make
 ```
 
-### To run:
+## To run:
 
 ```sh
 ./prog
 ```
 
-### Try:
+## Try:
 
 ```sh
 # first input to try

2020/kurdyukov4/README.md

@@ -10,13 +10,13 @@ Twitter: @ilyakurdyukov
 make
 ```
 
-### To run:
+## To run:
 
 ```sh
 ./prog text_file output_length context_length random_seed
 ```
 
-### Try:
+## Try:
 
 ```sh
 ./prog Shakespeare.txt 2000 10 1

2020/otterness/README.md

@@ -9,13 +9,13 @@ Nathan Otterness
 make
 ```
 
-### To run:
+## To run:
 
 ```sh
 ./prog
 ```
 
-### Try:
+## Try:
 
 ```sh
 wget -O cvikl.mid 'http://www.kunstderfuge.com/-/midi.asp?file=beethoven/symphony_6_1_(c)cvikl.mid'

2020/tsoj/README.md

@@ -9,13 +9,13 @@ tsoj <tsoj.tsoj@gmx.de>
 make
 ```
 
-### To run:
+## To run:
 
 ```sh
 ./prog
 ```
 
-### Try:
+## Try:
 
 ```sh
 # Make your terminal as large as possible, possibly reduce your font size

2020/yang/README.md

@@ -9,13 +9,13 @@ Don Yang
 make
 ```
 
-### To run:
+## To run:
 
 ```sh
 ./prog [PIN] < input.txt > output.c
 ```
 
-### Try:
+## Try:
 
 ```sh
 echo "International Obfuscated C Code Contest 2020" | ./prog 23209 > code.c