test: update error message for zstd_uncompress to reflect correct argument expectation

Author: kjdev

tests/005_b.phpt

@@ -33,7 +33,7 @@ try {
 ===DONE===
 --EXPECTF--
 *** Testing zstd_uncompress() function with Zero arguments ***
-ArgumentCountError: zstd_uncompress() expects exactly 1 argument, 0 given in %s:%d
+ArgumentCountError: zstd_uncompress() expects at least 1 argument, 0 given in %s:%d
 Stack trace:
 #0 %s(%d): zstd_uncompress()
 #1 {main}

tests/named_args.phpt

@@ -70,7 +70,7 @@ zstd_compress(): Argument #1 ($data) not passed
 string(6) "string"
 bool(true)
 ** zstd_uncompress(): false **
-zstd_uncompress() expects exactly 1 argument, 0 given
+zstd_uncompress() expects at least 1 argument, 0 given
 ** zstd_uncompress(data:) **
 string(6) "string"
 bool(true)