dt-bindings: Fix emails with spaces or missing brackets

Fix email addresses with spaces or missing brackets. A pending
dtschema meta-schema change will check for these.

Acked-by: Manivannan Sadhasivam <mani@kernel.org>
Acked-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Acked-by: Guenter Roeck <linux@roeck-us.net>
Link: https://patch.msgid.link/20260126164724.2832009-1-robh@kernel.org
Signed-off-by: Rob Herring (Arm) <robh@kernel.org>

Documentation/devicetree/bindings/hwmon/sensirion,shtc1.yaml

@@ -7,7 +7,7 @@ $schema: http://devicetree.org/meta-schemas/core.yaml#
 title: Sensirion SHTC1 Humidity and Temperature Sensor IC
 
 maintainers:
-  - Christopher Ruehl chris.ruehl@gtsys.com.hk
+  - Christopher Ruehl <chris.ruehl@gtsys.com.hk>
 
 description: |
   The SHTC1, SHTW1 and SHTC3 are digital humidity and temperature sensors

Documentation/devicetree/bindings/input/syna,rmi4.yaml

@@ -8,7 +8,7 @@ title: Synaptics RMI4 compliant devices
 
 maintainers:
   - Jason A. Donenfeld <Jason@zx2c4.com>
-  - Matthias Schiffer <matthias.schiffer@ew.tq-group.com
+  - Matthias Schiffer <matthias.schiffer@ew.tq-group.com>
   - Vincent Huang <vincent.huang@tw.synaptics.com>
 
 description: |

Documentation/devicetree/bindings/media/samsung,exynos5250-gsc.yaml

@@ -9,7 +9,7 @@ title: Samsung Exynos SoC G-Scaler
 maintainers:
   - Inki Dae <inki.dae@samsung.com>
   - Krzysztof Kozlowski <krzk@kernel.org>
-  - Seung-Woo Kim <sw0312.kim@samsung.com
+  - Seung-Woo Kim <sw0312.kim@samsung.com>
 
 description:
   G-Scaler is used for scaling and color space conversion on Samsung Exynos

Documentation/devicetree/bindings/pci/mbvl,gpex40-pcie.yaml

@@ -7,7 +7,7 @@ $schema: http://devicetree.org/meta-schemas/core.yaml#
 title: Mobiveil AXI PCIe Host Bridge
 
 maintainers:
-  - Frank Li <Frank Li@nxp.com>
+  - Frank Li <Frank.Li@nxp.com>
 
 description:
   Mobiveil's GPEX 4.0 is a PCIe Gen4 host bridge IP. This configurable IP