Fixes for documentation.

pkg/analysis_server/lib/src/analysis_server.dart

Index: pkg/analysis_server/lib/src/analysis_server.dart
diff --git a/pkg/analysis_server/lib/src/analysis_server.dart b/pkg/analysis_server/lib/src/analysis_server.dart
index e28b17ba1f197b4b2595e3edce3875742ce9a00f..076e01c54cdd30cf67d49f651c1873d96f4f5c0b 100644
--- a/pkg/analysis_server/lib/src/analysis_server.dart
+++ b/pkg/analysis_server/lib/src/analysis_server.dart
@@ -589,8 +589,8 @@ class AnalysisServer {
 
   /**
    * Return an analysis driver to which the file with the given [path] is
-   * added if exists, otherwise a driver in which the file was analyzed if
-   * exists, otherwise the first driver, otherwise `null`.
+   * added if one exists, otherwise a driver in which the file was analyzed if
+   * one exists, otherwise the first driver, otherwise `null`.
    */
   nd.AnalysisDriver getAnalysisDriver(String path) {
     Iterable<nd.AnalysisDriver> drivers = driverMap.values;