Bug 41036: Rename go_vendor-$project-alpha make targets to go_vendor-$project

Since we don't have a `-nightly` target anymore, we don't need to keep
`-alpha` in the other targets.

Makefile

@@ -631,16 +631,16 @@ cargo_vendor-application-services: submodule-update
 cargo_vendor-cbindgen: submodule-update
 	$(rbm) build cbindgen --step cargo_vendor --target alpha --target torbrowser-linux-x86_64
 
-go_vendor-snowflake-alpha: submodule-update
+go_vendor-snowflake: submodule-update
 	$(rbm) build snowflake --step go_vendor --target alpha --target torbrowser-linux-x86_64
 
-go_vendor-conjure-alpha: submodule-update
+go_vendor-conjure: submodule-update
 	$(rbm) build conjure --step go_vendor --target alpha --target torbrowser-linux-x86_64
 
-go_vendor-webtunnel-alpha: submodule-update
+go_vendor-webtunnel: submodule-update
 	$(rbm) build webtunnel --step go_vendor --target alpha --target torbrowser-linux-x86_64
 
-go_vendor-lyrebird-alpha: submodule-update
+go_vendor-lyrebird: submodule-update
 	$(rbm) build lyrebird --step go_vendor --target alpha --target torbrowser-linux-x86_64
 
 

doc/how-to-update-go-dependencies.txt

@@ -2,8 +2,7 @@ When the dependencies of a go project ($project in the following lines)
 are changing:
 
 - the go.mod and go.sum files in $project.git are updated
-- in tor-browser-build, run `make go_vendor-$project-alpha` or
-  `make go_vendor-$project-nightly`
+- in tor-browser-build, run `make go_vendor-$project`
 - find the new file created in directory `out/$project/go_vendor` and
   compute its sha256sum
 - in `projects/$project/config`, update `norec/sha256sum` for `go_vendor`