Fix broken reference to profiles
After searching all documentation for the `my-analyses` reference, I found only
the one modified by this commit.
Resolves
@@ -46,7 +46,7 @@ npm install --global auspice
#### 3. Run basic analysis on example data
```
ncov$ conda activate nextstrain
-ncov$ snakemake --profile ./my-analyses/example
+ncov$ snakemake --profile ./my_profiles/example
```
