build: rename master -> main

yes, we are late to this party, sorry.

.github/workflows/ci.yml

@@ -1,9 +1,9 @@
 name: CI
 on:
   push:
-    branches: [master]
+    branches: [main]
   pull_request:
-    branches: [master]
+    branches: [main]
 jobs:
   ci:
     runs-on: ubuntu-latest

README.md

@@ -1,5 +1,7 @@
 # 🍻 oazapfts!
 
+[![CI](https://github.com/cellular/oazapfts/actions/workflows/ci.yml/badge.svg)](https://github.com/cellular/oazapfts/actions/workflows/ci.yml)
+
 Generate TypeScript clients to tap into OpenAPI servers.
 
 ## Features

src/runtime/query.ts

@@ -10,7 +10,7 @@ export function query(...params: string[]) {
 
 /**
  * Serializes nested objects according to the `deepObject` style specified in
- * https://github.com/OAI/OpenAPI-Specification/blob/master/versions/3.0.0.md#style-values
+ * https://github.com/OAI/OpenAPI-Specification/blob/main/versions/3.0.0.md#style-values
  */
 export function deep(
   params: Record<string, any>,
@@ -40,7 +40,7 @@ export function deep(
  * Property values of type array or object generate separate parameters
  * for each value of the array, or key-value-pair of the map.
  * For other types of properties this property has no effect.
- * See https://github.com/OAI/OpenAPI-Specification/blob/master/versions/3.0.0.md#encoding-object
+ * See https://github.com/OAI/OpenAPI-Specification/blob/main/versions/3.0.0.md#encoding-object
  */
 export function explode(
   params: Record<string, any>,