Fix header casing

Author: Blargian

docs/integrations/data-visualization/grafana/config.md

@@ -63,7 +63,7 @@ More settings will be displayed if you choose to connect via the HTTP protocol.
 
 <Image size="md" img={config_http} alt="Extra HTTP config options" border />
 
-#### HTTP Path {#http-path}
+#### HTTP path {#http-path}
 
 If your HTTP server is exposed under a different URL path, you can add that here.
 
@@ -73,7 +73,7 @@ jsonData:
   path: additional/path/example
 ```
 
-#### Custom HTTP Headers {#custom-http-headers}
+#### Custom HTTP headers {#custom-http-headers}
 
 You can add custom headers to the requests sent to your server.
 
@@ -98,7 +98,7 @@ secureJsonData:
   secureHttpHeaders.X-Example-Secure-Header: secure header value
 ```
 
-## Additional Settings {#additional-settings}
+## Additional settings {#additional-settings}
 
 These additional settings are optional.
 
@@ -185,7 +185,7 @@ jsonData:
     serviceTagsColumn:   <string>    # service tags column. This is expected to be a map type.
 ```
 
-### Column Aliases {#column-aliases}
+### Column aliases {#column-aliases}
 
 Column aliasing is a convenient way to query your data under different names and types.
 With aliasing, you can take a nested schema and flatten it so it can be easily selected in Grafana.
@@ -196,7 +196,7 @@ Aliasing may be relevant to you if:
 - You store JSON as strings
 - You often apply functions to transform the columns you select
 
-#### Table-defined ALIAS Columns {#table-defined-alias-columns}
+#### Table-defined ALIAS columns {#table-defined-alias-columns}
 
 ClickHouse has column aliasing built-in and works with Grafana out of the box.
 Alias columns can be defined directly on the table.
@@ -214,7 +214,7 @@ Table-defined aliases will not be returned with `SELECT *`, but this can be conf
 
 For more info, read the documentation for the [ALIAS](/sql-reference/statements/create/table#alias) column type.
 
-#### Column Alias Tables {#column-alias-tables}
+#### Column alias tables {#column-alias-tables}
 
 By default, Grafana will provide column suggestions based on the response from `DESC table`.
 In some cases, you may want to completely override the columns that Grafana sees.
@@ -252,7 +252,7 @@ Now Grafana will see the results of the alias table instead of the results from
 
 Both types of aliasing can be used to perform complex type conversions or JSON field extraction.
 
-## All YAML Options {#all-yaml-options}
+## All YAML options {#all-yaml-options}
 
 These are all of the YAML configuration options made available by the plugin.
 Some fields have example values while others simply show the field's type.