add pika to docs (#1540)

docs-requirements.txt

@@ -29,6 +29,7 @@ falcon~=2.0
 grpcio~=1.27
 mysql-connector-python~=8.0
 psutil>=5
+pika>=0.12.0
 pymongo~=3.1
 PyMySQL~=0.9.3
 pyramid>=1.7

docs/instrumentation/pika/pika.rst

@@ -0,0 +1,7 @@
+OpenTelemetry Pika Instrumentation
+=====================================
+
+.. automodule:: opentelemetry.instrumentation.pika
+    :members:
+    :undoc-members:
+    :show-inheritance:

instrumentation/opentelemetry-instrumentation-pika/src/opentelemetry/instrumentation/pika/__init__.py

@@ -12,7 +12,7 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 """
-Instrument `pika` to trace RabbitMQ applications.
+Instrument pika to trace RabbitMQ applications.
 
 Usage
 -----
@@ -63,7 +63,7 @@ Usage
     PikaInstrumentor.instrument_channel(channel, tracer_provider=tracer_provider)
 
 * PikaInstrumentor also supports instrumenting with hooks that will be called when producing or consuming a message.
-  The hooks should be of type `Callable[[Span, bytes, BasicProperties], None]`
+  The hooks should be of type "Callable[[Span, bytes, BasicProperties], None]"
   where the first parameter is the span, the second parameter is the message body
   and the third parameter is the message properties