fix the headlines

Author: annetmyshkina

README.md

@@ -4,23 +4,23 @@
 # Brain games
 includes five mini-games:
 
-"Parity Check"
+##"Parity Check"
 
 [![asciicast](https://asciinema.org/a/FmjPz2ek6om6cO2LW04rxPVWz.svg)](https://asciinema.org/a/FmjPz2ek6om6cO2LW04rxPVWz)
 
-"Calculator"
+##"Calculator"
 
 [![asciicast](https://asciinema.org/a/XG4UsNQPwcvdQkba7YJVbNdUB.svg)](https://asciinema.org/a/XG4UsNQPwcvdQkba7YJVbNdUB)
 
-"Greatest Common Divisor"
+##"Greatest Common Divisor"
 
 [![asciicast](https://asciinema.org/a/URSm62jaBPbXL7gXS76C3MuDU.svg)](https://asciinema.org/a/URSm62jaBPbXL7gXS76C3MuDU)
 
-"Arithmetic progression"
+##"Arithmetic progression"
 
 [![asciicast](https://asciinema.org/a/PXHQlaINEHoMeeLjk4CGBP3tv.svg)](https://asciinema.org/a/PXHQlaINEHoMeeLjk4CGBP3tv)
 
-"Is a prime number?"
+##"Is a prime number?"
 
 [![asciicast](https://asciinema.org/a/bX5DZ1mlRLSx4PLoYAGi1EPUo.svg)](https://asciinema.org/a/bX5DZ1mlRLSx4PLoYAGi1EPUo)