[doc] Fix erroneous backslashes in signatures and names (GH-23658)



The issue being resolved is shown in the 3.10 docs (if you select docs for older versions you won't see a visual glitch).

The newer sphinx version that produces the 3.10 docs doesn't treat the backslash to escape things in some situations it previously did.
diff --git a/Doc/library/asyncio-subprocess.rst b/Doc/library/asyncio-subprocess.rst
index ea67430..f955a29 100644
--- a/Doc/library/asyncio-subprocess.rst
+++ b/Doc/library/asyncio-subprocess.rst
@@ -61,8 +61,8 @@
 Creating Subprocesses
 =====================
 
-.. coroutinefunction:: create_subprocess_exec(program, \*args, stdin=None, \
-                          stdout=None, stderr=None, limit=None, \*\*kwds)
+.. coroutinefunction:: create_subprocess_exec(program, *args, stdin=None, \
+                          stdout=None, stderr=None, limit=None, **kwds)
 
    Create a subprocess.
 
@@ -77,7 +77,7 @@
 
 
 .. coroutinefunction:: create_subprocess_shell(cmd, stdin=None, \
-                          stdout=None, stderr=None, limit=None, \*\*kwds)
+                          stdout=None, stderr=None, limit=None, **kwds)
 
    Run the *cmd* shell command.