Not ideal that the text column in mini_sotu_par is called text

[JBGruber]

text() is also a function, which means that the example in the readme can easily lead to a very confusing issue:

annotinder-r/README.Rmd

Lines 46 to 51 in b56d5f5

	```{r}
	units <- create_units(mini_sotu_par,
	id = "id",
	set_text("text", text)
	)
	```

If this was copied and used on different data, users don't get an error, but confusingly the unit values now contain a function definition:

library(annotinder)
df <- data.frame(id = 1:10, full_text = LETTERS[1:10])

units <- create_units(df, 
             id = "id", 
             set_text("text", text) 
) 
units[[1]][["unit"]][["text_fields"]][[1]][["value"]]
#> function (x, ...) 
#> UseMethod("text")
#> <bytecode: 0x5db8cd0b24c8>
#> <environment: namespace:graphics>

^{Created on 2025-03-20 with reprex v2.1.1}

Either the server then does not start up properly or the displayed text is the function definition, which is equally confusing.