Replace --aspect with --aspects.

Fixes #1375.

--
MOS_MIGRATED_REVID=124706979

blog/_posts/2016-06-10-ide-support.md

@@ -64,15 +64,15 @@ in certain packages, etc). E4b plugin then invokes bazel as follows:
 
 ```
 bazel build //java/com/company/example:main \
---aspect e4b_aspect.bzl%e4b_aspect \
+--aspects e4b_aspect.bzl%e4b_aspect \
 --output_groups ide-info
 ```
 
 (some details are omitted for clarity; see
 [e4b source](https://github.com/bazelbuild/e4b/blob/master/com.google.devtools.bazel.e4b/src/com/google/devtools/bazel/e4b/command/BazelCommand.java) for complete
 invocation)
 
-The "--aspect" flag directs Bazel to apply e4b_aspect, exported from
+The "--aspects" flag directs Bazel to apply e4b_aspect, exported from
 e4bazel.bzl Skylark extension, to target //java/com/company/example:main.
 
 The aspect is then applied transitively to the dependencies of the specified

docs/skylark/aspects.md

@@ -177,15 +177,15 @@ on the target objects representing its `proto_deps` attribute values.
 
 ### Applying aspects from command line.
 
-Aspects can also be applied on the command line, using the `--aspect` flag:
+Aspects can also be applied on the command line, using the `--aspects` flag:
 
 
 ```
 bazel build //java/com/company/example:main \
-      --aspect path/to/extension.bzl%metal_proto_aspect
+      --aspects path/to/extension.bzl%metal_proto_aspect
 ```
 
-`--aspect` flag takes one argument, which is a specification of the aspect in
+`--aspects` flag takes one argument, which is a specification of the aspect in
 the format `<extension file path>%<aspect top-level name>`.