Merge pull request #30865 from sdinay/patch-1

docs: Fix typo in v1.0 upgrade guide

website/docs/language/upgrade-guides/1-0.mdx

@@ -29,7 +29,7 @@ recommend upgrading one major version at a time until you reach Terraform v0.14,
 following the upgrade guides of each of those versions, because those earlier
 versions include mechanisms to automatically detect necessary changes to your
 configuration, and in some cases also automatically edit your configuration
-to include those changes. One you reach Terraform v0.14 you can then skip
+to include those changes. Once you reach Terraform v0.14 you can then skip
 directly from there to Terraform v1.0.
 
 The following table summarizes the above recommendations. In each case, we