opentelemetry-instrumentation: fix RST syntax of README (#3360)

* opentelemetry-instrumentation: fix RST syntax of README

* Update core sha

Author: xrmx

.github/workflows/lint_0.yml

@@ -10,7 +10,7 @@ on:
   pull_request:
 
 env:
-  CORE_REPO_SHA: opentelemetrybot/prepare-release-1.31.0-0.52b0
+  CORE_REPO_SHA: release/v1.31.x-0.52bx
   CONTRIB_REPO_SHA: main
   PIP_EXISTS_ACTION: w
 

.github/workflows/misc_0.yml

@@ -10,7 +10,7 @@ on:
   pull_request:
 
 env:
-  CORE_REPO_SHA: opentelemetrybot/prepare-release-1.31.0-0.52b0
+  CORE_REPO_SHA: release/v1.31.x-0.52bx
   CONTRIB_REPO_SHA: main
   PIP_EXISTS_ACTION: w
 

.github/workflows/test_0.yml

@@ -10,7 +10,7 @@ on:
   pull_request:
 
 env:
-  CORE_REPO_SHA: opentelemetrybot/prepare-release-1.31.0-0.52b0
+  CORE_REPO_SHA: release/v1.31.x-0.52bx
   CONTRIB_REPO_SHA: main
   PIP_EXISTS_ACTION: w
 

.github/workflows/test_1.yml

@@ -10,7 +10,7 @@ on:
   pull_request:
 
 env:
-  CORE_REPO_SHA: opentelemetrybot/prepare-release-1.31.0-0.52b0
+  CORE_REPO_SHA: release/v1.31.x-0.52bx
   CONTRIB_REPO_SHA: main
   PIP_EXISTS_ACTION: w
 

.github/workflows/test_2.yml

@@ -10,7 +10,7 @@ on:
   pull_request:
 
 env:
-  CORE_REPO_SHA: opentelemetrybot/prepare-release-1.31.0-0.52b0
+  CORE_REPO_SHA: release/v1.31.x-0.52bx
   CONTRIB_REPO_SHA: main
   PIP_EXISTS_ACTION: w
 

opentelemetry-instrumentation/README.rst

@@ -131,7 +131,7 @@ The above command will configure the global trace provider to use the Random IDs
 pass ``--port=3000`` to ``flask run``.
 
 Programmatic Auto-instrumentation
---------------------
+---------------------------------
 
 ::