Fix some indentation.

Change-Id: I2abce22ad62ed856907239157a71973eb88eb188
Reviewed-on: https://code-review.googlesource.com/c/re2/+/57818
Reviewed-by: Paul Wankadia <junyer@google.com>
diff --git a/.github/workflows/ci-bazel.yml b/.github/workflows/ci-bazel.yml
index 9aec657..534da03 100644
--- a/.github/workflows/ci-bazel.yml
+++ b/.github/workflows/ci-bazel.yml
@@ -12,6 +12,6 @@
     env:
       BAZELISK_GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
     steps:
-    - uses: actions/checkout@v2
-    - run: .github/bazel.sh
-      shell: bash
+      - uses: actions/checkout@v2
+      - run: .github/bazel.sh
+        shell: bash
diff --git a/.github/workflows/ci-cmake.yml b/.github/workflows/ci-cmake.yml
index 1a9d961..568312e 100644
--- a/.github/workflows/ci-cmake.yml
+++ b/.github/workflows/ci-cmake.yml
@@ -10,6 +10,6 @@
       matrix:
         os: [macos-latest, ubuntu-latest, windows-latest]
     steps:
-    - uses: actions/checkout@v2
-    - run: .github/cmake.sh
-      shell: bash
+      - uses: actions/checkout@v2
+      - run: .github/cmake.sh
+        shell: bash
diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 109296b..bfc4c97 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -13,9 +13,9 @@
       CC: clang
       CXX: clang++
     steps:
-    - uses: actions/checkout@v2
-    - run: make && make test
-      shell: bash
+      - uses: actions/checkout@v2
+      - run: make && make test
+        shell: bash
   build-clang:
     runs-on: ubuntu-latest
     strategy:
@@ -26,15 +26,15 @@
       CC: clang-${{ matrix.tag }}
       CXX: clang++-${{ matrix.tag }}
     steps:
-    - uses: actions/checkout@v2
-    - name: Install Clang ${{ matrix.tag }}
-      run: |
-        wget https://apt.llvm.org/llvm.sh
-        chmod +x ./llvm.sh
-        sudo ./llvm.sh ${{ matrix.tag }}
-      shell: bash
-    - run: make && make test
-      shell: bash
+      - uses: actions/checkout@v2
+      - name: Install Clang ${{ matrix.tag }}
+        run: |
+          wget https://apt.llvm.org/llvm.sh
+          chmod +x ./llvm.sh
+          sudo ./llvm.sh ${{ matrix.tag }}
+        shell: bash
+      - run: make && make test
+        shell: bash
   build-gcc:
     runs-on: ubuntu-latest
     container: gcc:${{ matrix.tag }}
@@ -46,6 +46,6 @@
       CC: gcc
       CXX: g++
     steps:
-    - uses: actions/checkout@v2
-    - run: make && make test
-      shell: bash
+      - uses: actions/checkout@v2
+      - run: make && make test
+        shell: bash