chore: correct typos and align struct field tags (#12)

Fixes typos in package documentation and variable names. Aligns 
struct field tags in examples and tests for better readability.

render.go

@@ -1,4 +1,4 @@
-// Package render provides a simple and flexible solutio to render a value to a
+// Package render provides a simple and flexible solution to render a value to a
 // io.Writer using different formats based on a format string argument.
 //
 // It is designed around using a custom type/struct to render your output.