fix(dotnet): Don't treat folder with .sln file as a .NET project (#2785)

* Don't treat folder with .sln file as a .NET project

* Update docs for .NET detect_extensions changes

src/configs/dotnet.rs

@@ -25,7 +25,7 @@ impl<'a> Default for DotnetConfig<'a> {
             style: "blue bold",
             heuristic: true,
             disabled: false,
-            detect_extensions: vec!["sln", "csproj", "fsproj", "xproj"],
+            detect_extensions: vec!["csproj", "fsproj", "xproj"],
             detect_files: vec![
                 "global.json",
                 "project.json",

src/modules/dotnet.rs

@@ -395,10 +395,7 @@ mod tests {
     fn shows_latest_in_directory_with_solution() -> io::Result<()> {
         let workspace = create_workspace(false)?;
         touch_path(&workspace, "solution.sln", None)?;
-        expect_output(
-            &workspace.path(),
-            Some(format!("{}", Color::Blue.bold().paint(".NET v3.1.103 "))),
-        );
+        expect_output(&workspace.path(), None);
         workspace.close()
     }