fix docs warnings

Author: blink1073

CHANGELOG.md

@@ -532,15 +532,15 @@ GitHub](https://github.com/jupyter/jupyter_client/milestones/5.1)
 
 ## 5.0
 
-#### 5.0.1
+### 5.0.1
 
 [5.0.1 on
 GitHub](https://github.com/jupyter/jupyter_client/milestones/5.0.1)
 
 - Update internal protocol version number to 5.1, which should have
   been done in 5.0.0.
 
-#### 5.0.0
+### 5.0.0
 
 [5.0.0 on
 GitHub](https://github.com/jupyter/jupyter_client/milestones/5.0)
@@ -590,7 +590,7 @@ Backward-incompatible changes:
 
 ## 4.4
 
-#### 4.4.0
+### 4.4.0
 
 [4.4 on
 GitHub](https://github.com/jupyter/jupyter_client/milestones/4.4)
@@ -603,7 +603,7 @@ GitHub](https://github.com/jupyter/jupyter_client/milestones/4.4)
 
 ## 4.3
 
-#### 4.3.0
+### 4.3.0
 
 [4.3 on
 GitHub](https://github.com/jupyter/jupyter_client/milestones/4.3)
@@ -614,21 +614,21 @@ GitHub](https://github.com/jupyter/jupyter_client/milestones/4.3)
 
 ## 4.2
 
-#### 4.2.2
+### 4.2.2
 
 [4.2.2 on
 GitHub](https://github.com/jupyter/jupyter_client/milestones/4.2.2)
 
 - Another fix for the `start_new_kernel` issue in 4.2.1 affecting slow-starting kernels.
 
-#### 4.2.1
+### 4.2.1
 
 [4.2.1 on
 GitHub](https://github.com/jupyter/jupyter_client/milestones/4.2.1)
 
 - Fix regression in 4.2 causing `start_new_kernel` to fail while waiting for kernels to become available.
 
-#### 4.2.0
+### 4.2.0
 
 [4.2.0 on
 GitHub](https://github.com/jupyter/jupyter_client/milestones/4.2)
@@ -645,7 +645,7 @@ GitHub](https://github.com/jupyter/jupyter_client/milestones/4.2)
 
 ## 4.1
 
-#### 4.1.0
+### 4.1.0
 
 [4.1.0 on
 GitHub](https://github.com/jupyter/jupyter_client/milestones/4.1)

docs/provisioning.rst

@@ -1,4 +1,4 @@
-.. _provisioning
+.. _provisioning:
 
 Customizing the kernel's runtime environment
 ============================================

docs/wrapperkernels.rst

@@ -134,7 +134,7 @@ You can override a number of other methods to improve the functionality of your
 kernel. All of these methods should return a dictionary as described in the
 relevant section of the :doc:`messaging spec <messaging>`.
 
-.. class:: MyKernel
+.. class:: MyCustomKernel
 
    .. method:: do_complete(code, cursor_pos)