Fix tmp/format-headers.sh, format headers

The script had "s surrounding the git ls-files command which turned it
to a single file which of course is wrong.

Ran script again fixing many README.md files that had incorrect number
of blank lines for critical headers.

This will have to be done a final but a good number of files have been
corrected.

2020/ferguson2/README.md

@@ -73,7 +73,6 @@ and to make it a bit more like the real thing.
 
 ### Alternate build:
 
-
 ```sh
 make alt
 ```
@@ -95,7 +94,6 @@ Use `prog.alt` as you would `prog` above.
 
 ### Alternate try:
 
-
 ```sh
 ./try.alt.sh
 ```

2020/giles/README.md

@@ -16,8 +16,6 @@ STATUS: INABIAF - please **DO NOT** fix
 For more detailed information see [2020 giles in bugs.md](/bugs.md#2020-giles).
 
 
-
-
 ## To use:
 
 ```sh

2020/kurdyukov2/README.md

@@ -34,7 +34,6 @@ rectangles.  What is the complexity? Is it obvious from the source code?
 
 ## Author's remarks:
 
-
 ### Usage
 
 This program divides the image into a specified number of rectangles. This

2020/kurdyukov3/README.md

@@ -57,7 +57,6 @@ exactly what it says nonetheless.
 
 ## Author's remarks:
 
-
 ### Letter Mixer
 
 Compile and try this:

2020/kurdyukov4/README.md

@@ -68,7 +68,6 @@ Now can you appreciate the award title a bit better?
 
 ## Author's remarks:
 
-
 ### Building:
 
 ```sh

2020/otterness/README.md

@@ -46,7 +46,6 @@ While doing that, you can be audibly *entertained* by a sample of its output.
 
 ## Author's remarks:
 
-
 ### MIDI "boots and cats"
 
 This program seeks to automatically "improve" standard MIDI files (.mid) by

2020/tsoj/README.md

@@ -37,6 +37,7 @@ where instead of `w`, `a`, `s` and `d`, you can use `k`, `h`, `j` and `l`.
 make alt
 ```
 
+
 ### Alternate use:
 
 ```sh