minor fixes, typos

.github/workflows/build-ton-linux-x86-64-portable.yml

@@ -22,6 +22,12 @@ jobs:
         sudo apt install -y build-essential git cmake ninja-build libc++-dev libc++abi-dev
         sudo apt remove libgsl-dev
 
+    - if: matrix.os == 'ubuntu-20.04'
+      run: |
+        sudo apt install -y manpages-dev software-properties-common
+        sudo add-apt-repository ppa:ubuntu-toolchain-r/test
+        sudo apt update && sudo apt install gcc-11 g++-11
+
     - if: matrix.os != 'ubuntu-24.04'
       run: |
         wget https://apt.llvm.org/llvm.sh

.github/workflows/create-release.yml

@@ -14,7 +14,7 @@ jobs:
       - name: Download Linux x86-64 artifacts
         uses: dawidd6/action-download-artifact@v6
         with:
-          workflow: build-ton-linux-x86-64-appimages.yml
+          workflow: build-ton-linux-x86-64-appimage.yml
           path: artifacts
           workflow_conclusion: success
           skip_unpack: true
@@ -22,7 +22,7 @@ jobs:
       - name: Download and unzip Linux x86-64 artifacts
         uses: dawidd6/action-download-artifact@v6
         with:
-          workflow: build-ton-linux-x86-64-appimages.yml
+          workflow: build-ton-linux-x86-64-appimage.yml
           path: artifacts
           workflow_conclusion: success
           skip_unpack: false
@@ -460,15 +460,6 @@ jobs:
           asset_name: tonlib-cli-mac-arm64
           tag: ${{ steps.tag.outputs.TAG }}
 
-      # linux x86-64 appimages
-      - name: Upload Linux x86-64 artifacts 20
-        uses: svenstaro/upload-release-action@v2
-        with:
-          repo_token: ${{ secrets.GITHUB_TOKEN }}
-          file: artifacts/ton-appimages-20.04.zip
-          asset_name: ton-appimages-20.04.zip
-          tag: ${{ steps.tag.outputs.TAG }}
-
       # linux x86-64
 
       - name: Upload Linux x86-64 artifacts