Update formatting to avoid horizontal scrolling (#721)

Right now, reading the docs requires horizontal scrolling
even on a normal desktop.

https://sourcegraph.com/docs/code-search/code-navigation/inference_configuration

Author: varungandhi-src

docs/code-search/code-navigation/inference_configuration.mdx

@@ -105,27 +105,54 @@ This auto-indexing-specific library defines the following two functions.
   - Type:
     ```
     ({
+      -- List of patterns to match against paths in the repository
       "patterns": array[pattern],
+      -- List of patterns to match against paths in the repository
+      -- for getting contents (see contents_by_path below)
       "patterns_for_content": array[pattern],
-      "generate": (registration_api, paths: array[string], contents_by_path: table[string, string]) -> array[index_job],
+      -- Callback function invoked with paths requested by patterns above
+      -- for creating index jobs
+      "generate": (
+          registration_api,
+          -- List of paths obtained from 'patterns' and
+          -- 'patterns_for_content' combined.
+          paths: array[string],
+          -- Table mapping paths to contents for paths matched by
+          -- 'patterns_for_content'
+          contents_by_path: table[string, string]
+      ) -> array[index_job],
     }) -> recognizer
     ```
     where `index_job` is an object with the following shape:
     ```
     index_job = {
-      "indexer": string, -- Docker image for the indexer
-      "root": string,    -- working directory for invoking the indexer
-      "steps": array[{   -- preparatory steps to run before invoking the indexer (e.g. installing dependencies)
-        "root": string,  -- working directory for this step
-        "image": string  -- Docker image to use for preparatory step
-        "commands": array[string] -- List of commands to run inside the Docker image
+      -- Docker image for the indexer
+      "indexer": string,
+      -- Working directory for invoking the indexer
+      "root": string,
+      -- Preparatory steps to run before invoking the indexer
+      -- such as installing dependencies
+      "steps": array[{
+        -- Working directory for this step
+        "root": string,
+        -- Docker image to use for this step
+        "image": string,
+        -- List of commands to run inside the Docker image
+        "commands": array[string]
       }],
-      "local_steps": array[string] -- List of commands to run inside the indexer image at "root" before invoking
-                                   -- the indexer (e.g. to install dependencies)
-      "indexer_args": array[string], -- command-line invocation for the indexer
-      "outfile": string,             -- path to the index generated by the indexer
-      "requested_envvars": array[string], -- List of environment variables needed. These are made accessible
-                                          -- to steps, local_steps, and the indexer_args command.
+      -- List of commands to run inside the indexer image at "root"
+      -- before invoking the indexer, such as installing dependencies.
+      "local_steps": array[string],
+      -- Command-line invocation for the indexer
+      "indexer_args": array[string],
+      -- Path to the index generated by the indexer
+      "outfile": string,
+      -- Names of necessary environment variables. These are
+      -- made accessible to steps, local_steps, and the
+      -- indexer_args command.
+      --
+      -- These are generally used for passing secrets.
+      "requested_envvars": array[string],
     }
     ```
     For installing dependencies, if the indexer image contains the relevant package manager(s),