Rename default branch as main

.github/workflows/codeql-analysis.yml

@@ -2,9 +2,9 @@ name: CodeQL
 
 on:
   push:
-    branches: [master]
+    branches: [main]
   pull_request:
-    branches: [master]
+    branches: [main]
   workflow_dispatch:
 
 jobs:

.github/workflows/nodejs.yml

@@ -2,9 +2,9 @@ name: Node.js
 
 on:
   pull_request:
-    branches: [master]
+    branches: [main]
   push:
-    branches: [master]
+    branches: [main]
   workflow_dispatch:
 
 jobs:

.github/workflows/typescript.yml

@@ -2,9 +2,9 @@ name: TypeScript
 
 on:
   pull_request:
-    branches: [master]
+    branches: [main]
   push:
-    branches: [master]
+    branches: [main]
   workflow_dispatch:
 
 jobs:

.gitmodules

@@ -11,4 +11,4 @@
 [submodule "tests/json-test-suite"]
 	path = tests/json-test-suite
 	url = https://github.com/nst/JSONTestSuite.git
-	branch = master
+	branch = main

docs/06_custom_tags.md

@@ -99,7 +99,7 @@ stringify(
 
 In YAML-speak, a custom data type is represented by a _tag_. To define your own tag, you need to account for the ways that your data is both parsed and stringified. Furthermore, both of those processes are split into two stages by the intermediate AST node structure.
 
-If you wish to implement your own custom tags, the [`!!binary`](https://github.com/eemeli/yaml/blob/master/src/tags/yaml-1.1/binary.js) and [`!!set`](https://github.com/eemeli/yaml/blob/master/src/tags/yaml-1.1/set.js) tags provide relatively cohesive examples to study in addition to the simple examples in the sidebar here.
+If you wish to implement your own custom tags, the [`!!binary`](https://github.com/eemeli/yaml/blob/main/src/tags/yaml-1.1/binary.js) and [`!!set`](https://github.com/eemeli/yaml/blob/main/src/tags/yaml-1.1/set.js) tags provide relatively cohesive examples to study in addition to the simple examples in the sidebar here.
 
 ### Parsing Custom Data
 

docs/07_parsing_yaml.md

@@ -171,7 +171,7 @@ For debug purposes, if the `LOG_TOKENS` env var is true-ish, all lexical tokens
 
 ### CST Nodes
 
-For a complete description of CST node interfaces, please consult the [cst.ts source](https://github.com/eemeli/yaml/blob/master/src/parse/cst.ts).
+For a complete description of CST node interfaces, please consult the [cst.ts source](https://github.com/eemeli/yaml/blob/main/src/parse/cst.ts).
 
 Some of the most common node properties include: