[x/blog] content: clarify sentence on stock in store post
[x/blog] content: clarify sentence on stock in store post

Change-Id: I2f8bebd979726f6fb7d1357408eab667e74c92c9
Reviewed-on: https://go-review.googlesource.com/c/blog/+/186777
Reviewed-by: Andrew Bonventre <682ad9f487f614f19e8b7cc5d340bdc8e1c1b128@golang.org>
X-Blog-Commit: 7375d5aa27d9a4caa6734e78ea2a12b50b3d0654

golang/website,golang/website,golang/website,golang/website,golang/website,golang/website,golang/website