Fix yaml linting errors

.github/workflows/build.yaml

@@ -1,3 +1,4 @@
+---
 name: build_and_test
 
 on:

.github/workflows/build_docs.yaml

@@ -1,3 +1,4 @@
+---
 name: docs
 
 on:

.github/workflows/formatting.yaml

@@ -1,3 +1,4 @@
+---
 name: Check Python formatting
 
 on:

.github/workflows/lint.yaml

@@ -1,3 +1,4 @@
+---
 name: lint
 
 on:

.github/workflows/yamllint.yaml

@@ -1,3 +1,4 @@
+---
 name: Lint YAML Files
 
 on:

.pre-commit-config.yaml

@@ -1,3 +1,4 @@
+---
 repos:
 
   - repo: https://github.com/pre-commit/pre-commit-hooks

doc/manifest.yaml

@@ -1,3 +1,4 @@
+---
 # Documentation manifest.
 
 # List of names of Python modules in this package.

scripts/joins.yaml

@@ -54,7 +54,7 @@ joins:
       visit1:
         - visit_id
       ccdvisit1:
-        #- visit_id
+        # - visit_id
         - exposure_id
 
   # visit1 and visit1_quicklook