diff --git a/Usage.md b/Usage.md
index 2548431f..9aa20482 100644
--- a/Usage.md
+++ b/Usage.md
@@ -108,12 +108,22 @@ Any configuration value in [configuration file](pr_agent/settings/configuration.
 
 
 ### Working with GitHub App
-When running PR-Agent from [GitHub App](INSTALL.md#method-5-run-as-a-github-app), the default configurations from a pre-built docker will be initially loaded.
+When running PR-Agent from GitHub App, the default [configuration file](pr_agent/settings/configuration.toml) from a pre-built docker will be initially loaded.
+
+By uploading a local `.pr_agent.toml` file, you can edit and customize any configuration parameter.
+
+For example, if you set in `.pr_agent.toml`:
+
+```
+[pr_reviewer]
+num_code_suggestions=1
+```
+
+Than you will overwrite the default number of code suggestions to be 1.
 
 #### GitHub app automatic tools
-The [github_app](pr_agent/settings/configuration.toml#L56) section defines GitHub app specific configurations.  
+The [github_app](pr_agent/settings/configuration.toml#L76) section defines GitHub app-specific configurations.  
 In this section you can define configurations to control the conditions for which tools will **run automatically**.  
-Note that a local `.pr_agent.toml` file enables you to edit and customize the default parameters of any tool, not just the ones that are run automatically.
 
 ##### GitHub app automatic tools for PR actions
 The GitHub app can respond to the following actions on a PR:
@@ -151,7 +161,7 @@ handle_pr_actions = []
 ```
 
 ##### GitHub app automatic tools for new code (PR push)
-In addition the running automatic tools when a PR is opened, the GitHub app can also respond to new code that is pushed to an open PR.
+In addition to running automatic tools when a PR is opened, the GitHub app can also respond to new code that is pushed to an open PR.
 
 The configuration toggle `handle_push_trigger` can be used to enable this feature.  
 The configuration parameter `push_commands` defines the list of tools that will be **run automatically** when new code is pushed to the PR.
diff --git a/pr_agent/git_providers/git_provider.py b/pr_agent/git_providers/git_provider.py
index 6f986cf0..9dee9e3c 100644
--- a/pr_agent/git_providers/git_provider.py
+++ b/pr_agent/git_providers/git_provider.py
@@ -143,6 +143,9 @@ def get_main_pr_language(languages, files) -> str:
     if not languages:
         get_logger().info("No languages detected")
         return main_language_str
+    if not files:
+        get_logger().info("No files in diff")
+        return main_language_str
 
     try:
         top_language = max(languages, key=languages.get).lower()
diff --git a/pr_agent/settings/.secrets_template.toml b/pr_agent/settings/.secrets_template.toml
index 0271a2c3..b6b11cd4 100644
--- a/pr_agent/settings/.secrets_template.toml
+++ b/pr_agent/settings/.secrets_template.toml
@@ -34,7 +34,7 @@ key = "" # Optional, uncomment if you want to use Huggingface Inference API. Acq
 api_base = "" # the base url for your huggingface inference endpoint 
 
 [ollama]
-api_base = "" # the base url for your huggingface inference endpoint 
+api_base = "" # the base url for your local Llama 2, Code Llama, and other models inference endpoint. Acquire through https://ollama.ai/
 
 [github]
 # ---- Set the following only for deployment type == "user"
diff --git a/pr_agent/settings/pr_reviewer_prompts.toml b/pr_agent/settings/pr_reviewer_prompts.toml
index b717ec3d..556d824e 100644
--- a/pr_agent/settings/pr_reviewer_prompts.toml
+++ b/pr_agent/settings/pr_reviewer_prompts.toml
@@ -151,7 +151,7 @@ PR Analysis:
   PR summary: |-
     xxx
   Type of PR: |-
-    Bug fix
+    ...
 {%- if require_score %}
   Score: 89
 {%- endif %}
diff --git a/pr_agent/tools/pr_reviewer.py b/pr_agent/tools/pr_reviewer.py
index fdb7161e..7cf561e2 100644
--- a/pr_agent/tools/pr_reviewer.py
+++ b/pr_agent/tools/pr_reviewer.py
@@ -239,7 +239,8 @@ class PRReviewer:
             last_commit_msg = self.incremental.commits_range[0].commit.message if self.incremental.commits_range else ""
             incremental_review_markdown_text = f"Starting from commit {last_commit_url}"
             if last_commit_msg:
-                incremental_review_markdown_text += f"  \n_({last_commit_msg.splitlines(keepends=False)[0]})_"
+                replacement = last_commit_msg.splitlines(keepends=False)[0].replace('_', r'\_')
+                incremental_review_markdown_text += f"  \n_({replacement})_"
             data = OrderedDict(data)
             data.update({'Incremental PR Review': {
                 "⏮️ Review for commits since previous PR-Agent review": incremental_review_markdown_text}})