Updated packages.md fixed a paragraph

Simplified the paragraph under the heading ###Determining module system, mentioning --experimental-detect-module flag and reference to cli.md

doc/api/packages.md

@@ -69,12 +69,12 @@ expressions:
 * Strings passed in as an argument to `--eval`, or piped to `node` via `STDIN`,
   with the flag `--input-type=module`.
 
-* When using [`--experimental-detect-module`][], code that contains syntax that
-  only parses successfully as [ES modules][], such as `import` or `export`
-  statements or `import.meta`, when the code has no explicit marker of how it
-  should be interpreted. Explicit markers are `.mjs` or `.cjs` extensions,
-  `package.json` `"type"` fields with either `"module"` or `"commonjs"` values,
-  or `--input-type` or `--experimental-default-type` flags. Dynamic `import()`
+* When using [`--experimental-detect-module`][], code containing syntax only
+  successfully parsed as [ES modules][], such as `import` or `export`
+  statements or `import.meta`, having no explicit marker of how it should be
+  interpreted. Explicit markers are `.mjs` or `.cjs` extensions, `package.json`
+  `"type"` fields with either `"module"` or `"commonjs"` values, or
+  `--input-type` or `--experimental-default-type` flags. Dynamic `import()`
   expressions are supported in either CommonJS or ES modules and would not
   cause a file to be treated as an ES module.