Simplify readme_contains_agave_tag test

Author: smoelius

tests/ci.rs

@@ -1,11 +1,6 @@
 use assert_cmd::Command;
 use regex::Regex;
-use std::{
-    env::remove_var,
-    ffi::OsStr,
-    fs::{read, read_to_string},
-    path::Path,
-};
+use std::{env::remove_var, ffi::OsStr, fs::read_to_string, path::Path};
 use walkdir::WalkDir;
 
 #[ctor::ctor]
@@ -98,10 +93,8 @@ fn readme_contains_agave_tag() {
     let agave_tag = read_to_string("agave_tag.txt")
         .map(|s| s.trim_end().to_owned())
         .unwrap();
-    let readme = read("README.md").unwrap();
-    assert!(readme
-        .windows(agave_tag.len())
-        .any(|w| w == agave_tag.as_bytes()));
+    let readme = read_to_string("README.md").unwrap();
+    assert!(readme.contains(&agave_tag));
 }
 
 #[test]