chore: Update envvar descriptions to match signal

In some cases, a signal different from the one the environment variable was named after was used in the documentation.

Author: kaylareopelle

opentelemetry-sdk/src/opentelemetry/sdk/environment_variables/__init__.py

@@ -561,7 +561,7 @@
 .. envvar:: OTEL_EXPORTER_OTLP_LOGS_INSECURE
 
 The :envvar:`OTEL_EXPORTER_OTLP_LOGS_INSECURE` represents whether to enable client transport security
-for gRPC requests for metrics. A scheme of https takes precedence over the this configuration setting.
+for gRPC requests for logs. A scheme of https takes precedence over the this configuration setting.
 Default: False
 """
 
@@ -581,15 +581,15 @@
 .. envvar:: OTEL_EXPORTER_OTLP_METRICS_CERTIFICATE
 
 The :envvar:`OTEL_EXPORTER_OTLP_METRICS_CERTIFICATE` stores the path to the certificate file for
-TLS credentials of gRPC client for traces. Should only be used for a secure connection for tracing.
+TLS credentials of gRPC client for metrics. Should only be used for a secure connection for metrics.
 """
 
 OTEL_EXPORTER_OTLP_LOGS_CERTIFICATE = "OTEL_EXPORTER_OTLP_LOGS_CERTIFICATE"
 """
 .. envvar:: OTEL_EXPORTER_OTLP_LOGS_CERTIFICATE
 
 The :envvar:`OTEL_EXPORTER_OTLP_LOGS_CERTIFICATE` stores the path to the certificate file for
-TLS credentials of gRPC client for traces. Should only be used for a secure connection for tracing.
+TLS credentials of gRPC client for logs. Should only be used for a secure connection for logs.
 """
 
 OTEL_EXPORTER_OTLP_METRICS_HEADERS = "OTEL_EXPORTER_OTLP_METRICS_HEADERS"