fix: fix mermaid again (#127)

GA can't find the preprocessor binary for some reason.

Description
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Motivation and Context
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How Has This Been Tested?
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.github/workflows/rfc_deploy.yml

@@ -16,6 +16,8 @@ jobs:
         run: |
           curl -L https://github.com/badboy/mdbook-mermaid/releases/download/v0.13.0/mdbook-mermaid-v0.13.0-x86_64-unknown-linux-gnu.tar.gz | tar xvz
           curl -L https://github.com/rust-lang/mdBook/releases/download/v0.4.36/mdbook-v0.4.36-x86_64-unknown-linux-gnu.tar.gz | tar xvz
+          ./mdbook --version
+          ./mdbook-mermaid --version
 
       - name: Build 🛠
         run: |

.github/workflows/rfc_test.yml

@@ -16,8 +16,10 @@ jobs:
 
       - name: Install 🦀
         run: |
-          curl -L https://github.com/badboy/mdbook-mermaid/releases/download/v0.10.0/mdbook-mermaid-v0.10.0-x86_64-unknown-linux-gnu.tar.gz | tar xvz
-          curl -L https://github.com/rust-lang/mdBook/releases/download/v0.4.8/mdbook-v0.4.8-x86_64-unknown-linux-gnu.tar.gz | tar xvz
+          curl -L https://github.com/badboy/mdbook-mermaid/releases/download/v0.13.0/mdbook-mermaid-v0.13.0-x86_64-unknown-linux-gnu.tar.gz | tar xvz
+          curl -L https://github.com/rust-lang/mdBook/releases/download/v0.4.36/mdbook-v0.4.36-x86_64-unknown-linux-gnu.tar.gz | tar xvz
+          ./mdbook --version
+          ./mdbook-mermaid --version
 
       - name: Test 🧪
         run: |

book.toml

@@ -31,4 +31,4 @@ copy-js = true
 [preprocessor]
 
 [preprocessor.mermaid]
-command = "mdbook-mermaid"
+command = "./mdbook-mermaid"