Clarify spec integration headings and update refcache

Author: chalin

content/en/docs/contributing/sig-practices.md

@@ -234,12 +234,10 @@ The following workflow can be applied by maintainers to merge PRs:
   export PR=<ID OF THE PR>; gh pr checks ${PR} --watch && gh pr merge ${PR} --squash
   ```
 
-## Specification PRs
-
-### Spec integration branches {#spec-integration-branches}
+## Specification PRs and integration branches {#spec-integration-branches}
 
 The website continuously integrates unreleased changes from the
-[opentelemetry-specification][] and [semantic-conventions][] repos. Two
+[opentelemetry-specification][] and [semantic-conventions][] repositories. Two
 scheduled workflows ([details][ci-section]) run daily and keep a draft
 "integration" PR current with the next dev version:
 
@@ -256,7 +254,7 @@ scheduled workflows ([details][ci-section]) run daily and keep a draft
 [semconv-branches]:
   https://github.com/open-telemetry/opentelemetry.io/branches/all?query=semconv-integration
 
-#### Spec / semconv SIG maintainers
+### Spec / semconv SIG maintainers
 
 Just before cutting a release:
 
@@ -271,7 +269,7 @@ Just before cutting a release:
    `@open-telemetry/docs-maintainers` so we can address breakage before the
    release goes out.
 
-#### Comms SIG maintainers
+### Comms SIG maintainers
 
 Throughout the month, regularly check the integration PRs and commit incremental
 fixes to keep their CI checks green. Catching breakage early — while the

content/en/site/build/ci-workflows.md

@@ -265,11 +265,11 @@ nothing needed to be committed.
 
 ## Spec integration branches {#spec-integration-branches}
 
-Two scheduled workflows track unreleased changes from upstream spec repos and
-keep a draft PR ("integration branch") current with the next development
+Two scheduled workflows track unreleased changes from upstream spec repositories
+and keep a draft PR ("integration branch") current with the next development
 version:
 
-| Workflow file                             | Upstream repo                 | Branch slug |
+| Workflow file                             | Upstream repository           | Branch slug |
 | ----------------------------------------- | ----------------------------- | ----------- |
 | [update-spec-integration-branch.yml][]    | `opentelemetry-specification` | `spec`      |
 | [update-semconv-integration-branch.yml][] | `semantic-conventions`        | `semconv`   |

static/refcache.json

@@ -15139,6 +15139,14 @@
     "StatusCode": 206,
     "LastSeen": "2026-03-23T14:15:27.098744982Z"
   },
+  "https://github.com/open-telemetry/opentelemetry.io/actions/workflows/update-semconv-integration-branch.yml": {
+    "StatusCode": 206,
+    "LastSeen": "2026-04-18T13:13:24.611167-04:00"
+  },
+  "https://github.com/open-telemetry/opentelemetry.io/actions/workflows/update-spec-integration-branch.yml": {
+    "StatusCode": 206,
+    "LastSeen": "2026-04-18T13:13:22.612054-04:00"
+  },
   "https://github.com/open-telemetry/opentelemetry.io/blob/248cc6f/.github/scripts/blog-publish-check.sh": {
     "StatusCode": 206,
     "LastSeen": "2026-03-20T19:58:14.025523139Z"
@@ -15195,6 +15203,14 @@
     "StatusCode": 206,
     "LastSeen": "2026-04-10T10:03:37.797869938Z"
   },
+  "https://github.com/open-telemetry/opentelemetry.io/blob/main/.github/workflows/update-semconv-integration-branch.yml": {
+    "StatusCode": 206,
+    "LastSeen": "2026-04-18T13:14:25.301957-04:00"
+  },
+  "https://github.com/open-telemetry/opentelemetry.io/blob/main/.github/workflows/update-spec-integration-branch.yml": {
+    "StatusCode": 206,
+    "LastSeen": "2026-04-18T13:14:24.039183-04:00"
+  },
   "https://github.com/open-telemetry/opentelemetry.io/blob/main/.markdownlint-cli2.yaml": {
     "StatusCode": 206,
     "LastSeen": "2026-04-10T09:57:46.03187341Z"
@@ -15247,6 +15263,14 @@
     "StatusCode": 206,
     "LastSeen": "2026-03-25T09:54:35.657078937Z"
   },
+  "https://github.com/open-telemetry/opentelemetry.io/branches/all?query=semconv-integration": {
+    "StatusCode": 206,
+    "LastSeen": "2026-04-18T13:13:21.117954-04:00"
+  },
+  "https://github.com/open-telemetry/opentelemetry.io/branches/all?query=spec-integration": {
+    "StatusCode": 206,
+    "LastSeen": "2026-04-18T13:13:20.134311-04:00"
+  },
   "https://github.com/open-telemetry/opentelemetry.io/commits/main/": {
     "StatusCode": 206,
     "LastSeen": "2026-04-10T09:57:49.2943328Z"
@@ -15407,6 +15431,10 @@
     "StatusCode": 206,
     "LastSeen": "2026-04-10T09:57:43.700155535Z"
   },
+  "https://github.com/open-telemetry/opentelemetry.io/tree/main/scripts/gh/specs/pick-branch": {
+    "StatusCode": 206,
+    "LastSeen": "2026-04-18T13:14:26.279254-04:00"
+  },
   "https://github.com/open-telemetry/opentelemetry.io/tree/main/templates/registry-entry.yml": {
     "StatusCode": 206,
     "LastSeen": "2026-03-24T09:56:20.835125672Z"