[manifest] Fix project names

I forgot that the checkout recipe module assumes that the `name` fields
are the same as the corresponding Gerrit project names.

Bug: 422991335
Change-Id: Ic699cd32566656d40b87d74b6fd41ed621341d8c

manifest

diff --git a/manifest b/manifest
index 8565164..2d837b7 100644
--- a/manifest
+++ b/manifest
@@ -1,16 +1,16 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <manifest>
   <projects>
-    <project name="integration"
+    <project name="infra/checkout-tests/integration"
              path="integration"
              remote="https://fuchsia.googlesource.com/infra/checkout-tests/integration"
              gerrithost="https://fuchsia-review.googlesource.com"/>
-    <project name="project1"
+    <project name="infra/checkout-tests/project1"
              path="project1"
              remote="https://fuchsia.googlesource.com/infra/checkout-tests/project1"
              revision="1e54588a62f84a781f72bc4def1decaaeaed5025"
              gerrithost="https://fuchsia-review.googlesource.com"/>
-    <project name="project2"
+    <project name="infra/checkout-tests/project2"
              path="project2"
              remote="https://fuchsia.googlesource.com/infra/checkout-tests/project2"
              revision="11e71eb1e1e95614312ac86223d136e62bba47c6"