Apply suggestions from code review

Co-authored-by: Casey Rodarmor <casey@rodarmor.com>

Author: neunenak

README.md

@@ -2158,7 +2158,7 @@ change their behavior.
 | `[confirm(PROMPT)]`<sup>1.23.0</sup> | recipe | Require confirmation prior to executing recipe with a custom prompt. |
 | `[default]`<sup>1.43.0</sup> | recipe | Use recipe as module's default recipe. |
 | `[doc(DOC)]`<sup>1.27.0</sup> | module, recipe | Set recipe or module's [documentation comment](#documentation-comments) to `DOC`. |
-| `[env(ENV_VAR, VALUE)]` <sup>1.44</sup> | recipe | Set env vars that apply only to this recipe. |
+| `[env(ENV_VAR, VALUE)]` <sup>master</sup> | recipe | Set env vars that apply only to this recipe. |
 | `[extension(EXT)]`<sup>1.32.0</sup> | recipe | Set shebang recipe script's file extension to `EXT`. `EXT` should include a period if one is desired. |
 | `[group(NAME)]`<sup>1.27.0</sup> | module, recipe | Put recipe or module in in [group](#groups) `NAME`. |
 | `[linux]`<sup>1.8.0</sup> | recipe | Enable recipe on Linux. |
@@ -2538,7 +2538,7 @@ test $RUST_BACKTRACE="1":
   cargo test
 ```
 
-Or you can use the `[env(env_var, value)]` attribute to set environment variables that
+You can also use the `[env(NAME, VALUE)]` attribute to export environment variables to a specific recipe:
 apply only to this recipe:
 
 ```just

tests/attributes.rs

@@ -356,7 +356,7 @@ fn env_attribute_multiple() {
 }
 
 #[test]
-fn env_attribute_1_arg() {
+fn env_attribute_too_few_arguments() {
   Test::new()
     .justfile(
       "
@@ -379,7 +379,7 @@ fn env_attribute_1_arg() {
 }
 
 #[test]
-fn env_attribute_3_args() {
+fn env_attribute_too_many_arguments() {
   Test::new()
     .justfile(
       "