fix: bitcoindCustomConfig parsing

[openoms]

chatGPT result on why:
dbcache: 2600
is converted to:
dbcache=%!{float64=2600}
with the current config?

The error you're seeing is because you're trying to print a float64 type value with printf "%s=%s", which expects string arguments. The printf function in Go (and in this case, Go templating language which Helm uses) expects you to provide a format specifier that matches the type of the variable you're trying to print.

The %s format specifier is used for strings. When you try to print a float64 using %s, it doesn't know how to convert it and hence the output dbcache=%!{float64=2600}.

To fix this, you should use the %v format specifier, which is a generic format specifier that can print any type in its default format.

Tested with the integer values quoted and unquoted as well - results in the good bitcoin.conf format now.

[krtk6160]

lgtm