_content/ref/mod: document 'go install cmd@version' ignores vendor
For golang/go#48332
Change-Id: I3e1b6228ce2ef6c78b851bffb79b48e9ac06aad0
Reviewed-on: https://go-review.googlesource.com/c/website/+/349590
Trust: Jay Conrod <jayconrod@google.com>
Run-TryBot: Jay Conrod <jayconrod@google.com>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Bryan C. Mills <bcmills@google.com>
diff --git a/_content/ref/mod.md b/_content/ref/mod.md
index 500cf37..04d22ad 100644
--- a/_content/ref/mod.md
+++ b/_content/ref/mod.md
@@ -1499,13 +1499,16 @@
* All arguments must have the same version suffix. Different queries are not
allowed, even if they refer to the same version.
* All arguments must refer to packages in the same module at the same version.
-* No module is considered the [main module](#glos-main-module). If the module
- containing packages named on the command line has a `go.mod` file, it must not
- contain directives (`replace` and `exclude`) that would cause it to be
- interpreted differently than if it were the main module. The module must not
- require a higher version of itself.
* Package path arguments must refer to `main` packages. Pattern arguments
will only match `main` packages.
+* No module is considered the [main module](#glos-main-module).
+ * If the module containing packages named on the command line has a `go.mod`
+ file, it must not contain directives (`replace` and `exclude`) that would
+ cause it to be interpreted differently if it were the main module.
+ * The module must not require a higher version of itself.
+ * Vendor directories are not used in any module. (Vendor directories are not
+ included in [module zip files](#zip-files), so `go install` does not
+ download them.)
See [Version queries](#version-queries) for supported version query syntax.
Go 1.15 and lower did not support using version queries with `go install`.
