gptel-ollama, gptel-openai: Add example of backend creation

README: Fix error with Ollama backend instructions

README.org

@@ -169,12 +169,11 @@ You can pick this backend from the transient menu when using gptel (see usage),
 
 Register a backend with
 #+begin_src emacs-lisp
-(defvar gptel--ollama
-  (gptel-make-ollama
+(gptel-make-ollama
  "Ollama"                               ;Any name of your choosing
  :host "localhost:11434"                ;Where it's running
  :models '("mistral:latest")            ;Installed models
-   :stream t))                          ;Stream responses
+ :stream t)                             ;Stream responses
 #+end_src
 These are the required parameters, refer to the documentation of =gptel-make-gpt4all= for more.
 

gptel-ollama.el

@@ -113,7 +113,16 @@ alist, like:
 
 KEY (optional) is a variable whose value is the API key, or
 function that returns the key. This is typically not required for
-local models like Ollama."
+local models like Ollama.
+
+Example:
+-------
+
+(gptel-make-ollama
+  \"Ollama\"
+  :host \"localhost:11434\"
+  :models '(\"mistral:latest\")
+  :stream t)"
   (let ((backend (gptel--make-ollama
                   :name name
                   :host host

gptel-openai.el

@@ -166,7 +166,18 @@ alist, like:
 ((\"Content-Type\" . \"application/json\"))
 
 KEY (optional) is a variable whose value is the API key, or
-function that returns the key."
+function that returns the key.
+
+Example:
+-------
+
+(gptel-make-azure
+ \"Azure-1\"
+ :protocol \"https\"
+ :host \"YOUR_RESOURCE_NAME.openai.azure.com\"
+ :endpoint \"/openai/deployments/YOUR_DEPLOYMENT_NAME/completions?api-version=2023-05-15\"
+ :stream t
+ :models '(\"gpt-3.5-turbo\" \"gpt-4\"))"
   (let ((backend (gptel--make-openai
                   :name name
                   :host host
@@ -210,7 +221,16 @@ alist, like:
 
 KEY (optional) is a variable whose value is the API key, or
 function that returns the key. This is typically not required for
-local models like GPT4All.")
+local models like GPT4All.
+
+Example:
+-------
+
+(gptel-make-gpt4all
+ \"GPT4All\"
+ :protocol \"http\"
+ :host \"localhost:4891\"
+ :models '(\"mistral-7b-openorca.Q4_0.gguf\"))")
 
 (provide 'gptel-openai)
 ;;; gptel-backends.el ends here