Fix spelling / test formatting

envparse.go

@@ -5,7 +5,7 @@
 //
 //	KEY=value
 //
-// While extraneous characters are discouraged, an "export" prefix, preceeding
+// While extraneous characters are discouraged, an "export" prefix, preceding
 // whitespace, and trailing whitespace are all removed:
 //
 //	KEY = This is ok! # Parses to {"KEY": "This is ok!"}
@@ -152,7 +152,7 @@ func parseLine(ln []byte) ([]byte, []byte, error) {
 	// Scratch buffer for unescaped value
 	newv := make([]byte, len(value))
 	newi := 0
-	// Track last significant character for trimming unquoted whitespace preceeding a trailing comment
+	// Track last significant character for trimming unquoted whitespace preceding a trailing comment
 	lastSig := 0
 
 	// Parser State

envparse_test.go

@@ -16,7 +16,7 @@ FIRST="overwrite # original"  #...
 `)
 	env, err := Parse(bytes.NewReader(buf))
 	if err != nil {
-		t.Fatalf("unexpected error: %v")
+		t.Fatalf("unexpected error: %v", err)
 	}
 	if len(env) != 3 {
 		t.Fatalf("expected 3 keys but found %d: %#v", len(env), env)