CI: give better names to coverage and fuzzing jobs

Author: ystreet

.github/workflows/rust-coverage.yml

@@ -6,14 +6,14 @@ env:
   CARGO_TERM_COLOR: always
 
 jobs:
-  check:
+  coverage:
     name: 
     runs-on: ubuntu-latest
     steps:
       - name: Checkout repository
         uses: actions/checkout@v2
 
-      - name: Install stable toolchain
+      - name: Install nightly toolchain
         uses: actions-rs/toolchain@v1
         with:
           toolchain: nightly

.github/workflows/rust-fuzz.yml

@@ -7,7 +7,7 @@ env:
   RUST_BACKTRACE: 1
 
 jobs:
-  check:
+  fuzz:
     name: 
     runs-on: ubuntu-latest
     steps: