Update PRINT_HELP_FORMATTED.md

Author: MiranDMC

shared/docs/PRINT_HELP_FORMATTED.md

@@ -1,13 +1,16 @@
-This command displays a black rectangular text box similar to PRINT_HELP. The message is constructed out of the given string and any extra arguments, using common C++ format specifiers starting from `%`, e.g.:
-
-* `%d` prints an integer number
-* `%f` prints a floating-point number
-* `%s` prints a string.
-* `%p` prints a number as an 8-digit hex number
-* `%%` prints a single %
-
-For more supported specifiers see: https://cplusplus.com/reference/cstdio/printf/
-
-The string may contain zero or more format specifiers and their count must match the number of arguments.
+This command displays a black rectangular text box similar to PRINT_HELP. The message is constructed out of the given string and any extra arguments.  
 
+Common [C++ format specifiers](https://cplusplus.com/reference/cstdio/printf/) starting from `%` are used to define argument type, e.g.:  
+* `%d` integer number in decimal form
+* `%x` integer number in hex form (lower case letters)
+* `%X` integer number in hex form (upper case letters)
+* `%f` floating-point number
+* `%s` string
+* `%p` 8-digit hex number
+* `%%` single `%` character
+* `%c` single ASCII character specified by number
+* `%4d` at least 4 digits wide integer number (padded with spaces)
+* `%04d` at least 4 digits wide integer number (padded with zeros)
+* `%.2f` floating-point number rounded to 2 digits after decimal point
 
+The format string may contain zero or more specifiers and their count must match the number of arguments.